Let $f$ and $g$ be functions defined on a domain $A$. Prove that if $f$ is bounded, and $\displaystyle\lim_{x \rightarrow c} g(x)
If \($f$\)is bounded and \($\displaystyle\lim_{x \rightarrow c} g(x)$\) exists, then the limit of function\($f(x)g(x)$\)as \($x$\) approaches domain\($c$\)also exists and is equal to \($Lf(c)$\)
Let \($M$\)be an upper bound of \($f$\) on the domain . Since \($\displaystyle\lim_{x \rightarrow c} g(x)$\) exists, there exists a number \($L$\) such that for all \($\epsilon > 0$\) there exists a \($\delta > 0$\) such that for \($x \in A$\) with \($0 < |x - c| < \delta |g(x) - L| < \epsilon\).
Now let \(\epsilon > 0Then $|f(x)g(x) - Lf(x)| = |f(x)||g(x) - L| < M\epsilon\)
for all \(x \in A$ with $0 < |x - c| < \delta$\). So \(\displaystyle\lim_{x \rightarrow c} f(x)g(x)$ exists and is equal to $Lf(c)\)
If \($f$\) is bounded and \($\displaystyle\lim_{x \rightarrow c} g(x)$\) exists, then the limit of \(f(x)g(x)$\)as \($x$\)approaches\($c$\)also exists and is equal to \($Lf(c)$\).
The complete question is:
Let \($f$\) and \($g$\) be functions defined on a domain\($A$\). Prove that if \($f$\) is bounded, and \($\displaystyle\lim_{x \rightarrow c} g(x)$\)exists, then \($\displaystyle\lim_{x \rightarrow c} f(x)g(x)$\) exists.
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somebody help plz its hard for me
Answer:
I h ok honestly dont know that I'm so sorry
jessica has a die with 10 sides, another with 13 sides, and a third one with 5 sides. she rolls the three dice once. let z be the number of ones showing. find the expectation of z using the indicator method.
Jessica has three dice with 10 sides, 13 sides and 5 sides respectively and she rolls all dice once and if Z is number of ones occur then
The expectation value i.e, E(Z) is 0.376 and variance V[Z] = 0.321..
Indicator method :
This is a powerful way to find expected counts. This follows from the observation that the number of "good" outcomes in a trial can be counted by first coding each "good" outcome as one, coding each other outcome as zero, and then adding 1 and 0.
let X₁ be the outcome of a 10 sided die
X₂ be the outcome of 13 sided die
X₃ be the outcome of 5 sided die
let l₁ ,I₂ ,I₃ be three indicator functions such that
I₁ =1 if X₁ = 1
=0 otherwise
I₂ = 1 if X₂ = 1
=0 otherwise
I₃ = 1 if X₃ = 1
=0 otherwise
so Z denotes the number of ones showing when the three dice are rolled once.
so Z=I₁ +I₂ +I₃
so E[Z]=E[I₁]+E[I₂]+E[I₃]
so E[I₁]=1×P[X₁=1] = 1/10
E[I₂]=1×P[X₂=1] = 1/13
E[I₃]=1×P[X₃=1] = 1/5
so, E[Z]=1/10+1/13+1/5=49/130 = 0.3769
the variance = V[Z] = V[I₁]+V[I₂]+V[I₃] since the outcomes of the 3 different die are independent to each other hence no covariance term.
V[I₁]= 1²P[X₁=1]- E²[I₁]=1/10 -(1/10)²= 0.09
V[I₂]= 1²P[X₂=1]- E²[I₂]=1/13-(1/13)²= 12/169 = 0.071
V[I₃]= 1²P[X₃=1]- E²[I₃]=1/5 -(1/5)²= 4/25 = 0.16
so V[Z]= 0.09 + 0.071 + 0.16 = 0.321
Hence, the expectation value i.e, E(Z) is 0.3769..
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in the sector formed by angle mop, with o at the center of the circle, the central angle measures 1 radian, and the radius of the sector measures 8 ft. what is the perimeter of the entire sector? (hint: don't forget to include the radii as a part of the entire sector!)\
The perimeter of the entire sector is 24 feet.
What is circle?
A circle is a geometric shape that consists of all points in a plane that are equidistant from a fixed point called the center.
The perimeter of the entire sector is equal to the sum of the arc length and the two radii.
Since the central angle of the sector measures 1 radian, the arc length of the sector can be calculated using the formula:
arc length = radius x central angle
arc length = 8 ft x 1 radian
arc length = 8 ft
The length of each radius is equal to the radius of the sector, which is given to be 8 ft.
Therefore, the perimeter of the entire sector is:
perimeter = arc length + 2 x radius
perimeter = 8 ft + 2 x 8 ft
perimeter = 24 ft
So, the perimeter of the entire sector is 24 feet.
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Select the correct answer,
Which value of p makes this equation true?
1+1
o p=1
p=0
p=1
The equation has no solution
Submit
Pe
6
Answer:
p=‒1
Step-by-step explanation:
the answer is p=‒1
because ‒1+1/3=‒1+1/4
0/3 =0/4
0=0
i hope this helps you
Answer:
the answer is p=‒1
because ‒1+1/3=‒1+1/4
0/3 =0/4
0=0
Step-by-step explanation:
Calculate the difference between double 50 and half of 80
Answer:
60
Step-by-step explanation:
double 50 is 100 half of 80 is 40 answer is 60
hope this helps
1. match the graph to the table of values
Answer:
In order (Problem 1-4)
B
C
A
D
Step-by-step explanation:
These will give you 100%! Wish I had these before I took the quick check.
Answer:
The answer is b
Step-by-step explanation:
The whole test is
B
C
A
D
C
please can you solve this question
since we have our two medians, we need to add them up 1st then divide the sum by two;
50+60
2
= 110
2
= 55
55 is the median
eps in the correct order to help Kendra.
3,200 + 560 + 16
(400 × 8) + (70 × 8) + (2 × 8)
(400 × 8) × (70 × 8) × (2 × 8)
3,776
3,200 × 560 × 16
(400 + 70 + 2) × 8
(400 × 70 × 2) × 8
28,672,000
↓
↓
↓
3,200 + 560 + 16 √
(400 × 8) + (70 × 8) + (2 × 8) √
(400 × 8) × (70 × 8) × (2 × 8) X
3,776 √
3,200 × 560 × 16 √
(400 + 70 + 2) × 8 √
(400 × 70 × 2) × 8 X
28,672,000 X
\( \)
which point in the solution set of the given inequalities?
In the image, we can identify the region of the plane in which the two subregions overlap (the part of the graph which has vertical and horizontal lines). We can obtain the values of x and y in that region by means of the inequalities, in this way:
\(\begin{cases}x+y>2 \\ 4x+y\ge-1\end{cases}\)We solve the first inequality for y
\(y>2-x\)This gives us the first constrain for the value of y
Now, to obtain the second constrain we simply need to use the second inequality:
\(\begin{gathered} 4x+y\ge-1 \\ \Rightarrow y\ge-1-4x \end{gathered}\)Finally, the last step is to get the constraints for the value of x.
For this, we can directly analyze the image of the region, notice how it covers any value of x. This means that there are no constraints for the value of x.
\(\Rightarrow x\in\mathfrak{\Re }\)So, the region is given by:
\(x\in\mathfrak{\Re },\begin{cases}y>2-x \\ y\ge-4x-1\end{cases}\)Finally, the point that is in the region is the one that satisfies the previous inequalities.
1. (2,0)
If x=2, then
\(\begin{gathered} ,\begin{cases}y>2-2=0 \\ y\ge-4(2)-1=-9\end{cases} \\ \Rightarrow y>0 \end{gathered}\)So, (2,0) cannot be the correct option
2. (0,2)
\(\begin{gathered} \begin{cases}y>2-0=2 \\ y\ge-4(0)-1=-1\end{cases} \\ \Rightarrow y>2 \end{gathered}\)This means that (0,2) cannot be the right option
3. (0,3) notice that the same condition (y>2) holds in this situation too (since x=0)
But y=3>2. This point indeed satisfies the conditions! (0,3) is the answer
4. (0,-1) Notice that in this case y=-1 but it should happen that y>2. So this point cannot be in the region
A hot air balloon went from an elevation of 5,201 feet to an elevation of 3,339 feet
in 28 minutes.
What was its rate of descent
Convert the integral below to polar coordinates and evaluate the integral. Integral 5/root 2 0 Integral root 25 - y^2 y xy dx dy Instructions: Please enter the integrand in the first answer box, typing theta for theta. Depending on the order of integration you choose, enter dr and d theta in either order into the second and third answer boxes with only one dr or d theta in each box. Then, enter the limits of integration and evaluate the integral to find the volume. Integral B A Integral D C A = B = C = D = Volume =
The given integral is: ∫∫R 5/√(2) xy dA, where R is the region in the xy-plane bounded by the curves y = 0, x = √(25 - y^2) and x = 0. The volume of the solid is (5^5/8) cubic units.
Converting to polar coordinates, we have:
x = r cos(θ), y = r sin(θ), and the limits of integration become:
0 ≤ θ ≤ π/2, 0 ≤ r ≤ 5.
Also, the differential of area becomes dA = r dr dθ.
Substituting for x and y, and dA, we have:
∫∫R 5/√(2) xy dA = ∫θ=0π/2 ∫r=0^5 5/√(2) (r cos(θ)) (r sin(θ)) r dr dθ
= 5/√(2) ∫θ=0π/2 ∫r=0^5 r^3 cos(θ) sin(θ) dr dθ
= 5/√(2) ∫θ=0π/2 [sin(θ)/4] ∫r=0^5 r^4 cos(θ) dr dθ
= 5/√(2) ∫θ=0π/2 [sin(θ)/4] [(5^5 cos(θ))/5] dθ
= (5^5/4√(2)) ∫θ=0π/2 sin(θ) cos(θ) dθ
= (5^5/8)
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Helpppppp pleaseeeeee
R^2-59R-82r^2+60 is equivalent to
Answer: 83r^2 - 59 + 60
Step-by-step explanation:
R^2 - 59R - 82r^2 + 60
= 83r^2 - 59 + 60
The total area under a probability distribution equals 1.
A.) True
B.) False
This is true because a probability distribution is a mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.
The area under the probability distribution is a measure of the probability of all the possible outcomes. Since the sum of all the probabilities of all the possible outcomes must be 1, the total area under the probability distribution must also be 1. This is because the probability of an event happening is the area under the curve of the probability distribution at that event. Thus, the total area under the probability distribution must always equal 1.
This is true because a probability distribution is a mathematical function that provides the probabilities of occurrence of different possible outcomes in an experiment.
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Robin’s scores: 99, 108, 102, 107, 119 Evelyn’s scores: 125, 137, 138, 145, 145 Find and compare the medians of the data sets. Do the medians support your conclusion that Robin is winning the game?
Answer:
Robin’s median score is 107. Evelyn’s median score is 138. The medians are the same as the means, so the same conclusion would be reached that Robin is winning
Step-by-step explanation:
Answer:
Robin’s median score is 107. Evelyn’s median score is 138. The medians are the same as the means, so the same conclusion would be reached that Robin is winning.
can yall help me with this
In solving the following fraction, step (A) (4/7) × (-2/-1) is wrong and the correct step should be (4/7) × (-2/1).
What are fractions?Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many components of a particular size there are when stated in ordinary English.There are three main categories of fractions in mathematics. 'Proper fractions, incorrect fractions, and mixed fractions are these three types. The expressions with a numerator and a denominator are called fractions.So, the wrong step will be:
(4/7) ÷ (-1/2)Then, the next step should be:
(4/7) × (-2/1)But, the steps it is given as:
(4/7) × (-2/-1)Which makes the error.
Therefore, in solving the following fraction, step (A) (4/7) × (-2/-1) is wrong and the correct step should be (4/7) × (-2/1).
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please help me! i will give brainlest!
Answer:
16.5 should be correct because OS is half the length.
What is the fundamental theorem of algebra state and prove?
The Fundamental Theorem of Algebra states that every non-constant single-variable polynomial with complex coefficients has at least one complex root. This theorem is important as it provides a way to prove the existence of solutions to polynomial equations and provides an analytical tool to find the exact location of the solutions.
This theorem is also known as the algebraic version of the Intermediate Value Theorem as it states that if a polynomial is continuous on a closed interval, then it must take on all values between its maximum and minimum.
The theorem can be easily proven by considering a single-variable polynomial of degree n and transforming it into a polynomial of degree n−1 with the same roots. By repeating this process, the polynomial can be reduced to a constant and hence, it must have at least one root.
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I need help to answer this question
Answer:
Step-by-step explanation:
x = 180 - 72 = 108° (linear pair)
y = 72° (vertically opposite angles)
z = 180 - (90+72) = 180 - 162 = 18°
Which equation is y = 2x2 – 8x 9 rewritten in vertex form? y = 2(x – 2)2 9 y = 2(x – 2)2 5 y = 2(x – 2)2 1 y = 2(x – 2)2 17
Answer:
Step-by-step explanation:
we have
\(y=2x2-8x+9\)
Group terms that contain the same variable, and move the constant to the opposite side of the equation
\(y-9=2x2-8x\)
\(y-9=2(x2-4x)\)
\(y-9+8=2(x2-4x+4)\)
\(y-1=2(x2-4x+4)\)
\(y-1=2(x-2)2\)
\(y=2(x-2)2+1\)
the answer is the option C
\(y=2(x-2)2+1\)
The equation y = 2x² – 8(x + 9) can be rewritten in vertex form as y = 2(x – 2)² + 1 option (C) is correct.
What is a parabola?It is defined as the graph of a quadratic function that has something bowl-shaped.
(x - h)² = 4a(y - k)
(h, k) is the vertex of the parabola:
a = √[(c-h)² + (d-k²]
(c, d) is the focus of the parabola:
It is given that:
The equation is:
y = 2x² – 8(x + 9)
y = 2x² - 8x + 8 + 1
y = 2(x² - 4x + 4) + 1
y = 2(x – 2)² + 1
Thus, the equation y = 2x² – 8(x + 9) can be rewritten in vertex form as y = 2(x – 2)² + 1 option (C) is correct.
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If DE is a midsegment then AD and DB are (always, sometimes , or never) congruent
The midsegment of AD (which in this case is DE) always generates two congruent parts (which in this case are AD and DB)
Nicole begins jogging for Mr. allergies class. on her first run, she runs one- half mile. she increases her work out by adding one-half mile a week to her run. she wrote the equation f(x) = 0.5 + 0.5x to model her progress. What does x represent?
A. Miles she runs.
B. Weeks she runs
C.miles she ran the first day
D. Calories she burns
HELP! IS THIS RIGHT?
Answer:
60x+300=96x-24
324=36x
x=324/36
x=9
yes it is correct
Solve the separable differential equation for u Du/dt=e^3u+10t Use the following initial condition: u(0)= 7.u = ___
The solution to the given separable differential equation for u, with the initial condition u(0) = 7.
To solve the separable differential equation for u, we start by rearranging the equation f as:
(1/u) du/dt = e^(3u)/u + 10t/u
We can now integrate both sides of the equation with respect to t and u, separately. Starting with the left-hand side, we have:
∫(1/u) du = ln|u| + C1
where C1 is the constant of integration. For the right-hand side, we can use u-substitution by letting v = 3u, dv/du = 3, and du/dv = 1/3u. Substituting these values into the equation f and simplifying, we have:
(1/3) ∫e^v dv = (1/3) e^v + C2
where C2 is another constant of integration. Substituting v = 3u back into the equation and combining the constants of integration, we get:
ln|u| = e^(3u)/3 + 10t/3 + C
where C = C1 + C2. To solve for u, we exponentiate both sides of the equation:
|u| = e^(e^(3u)/3 + 10t/3 + C)
We can drop the absolute value since u(0) = 7 > 0, and simplify the exponential expression by using the properties of exponents:
u = e^(e^(3u)/3) * e^(10t/3 + C)
Finally, we use the initial condition u(0) = 7 to solve for C:
7 = e^(e^(3(7))/3) * e^(10(0)/3 + C)
7 = e^(e^21/3) * e^C
ln(7/e^(e^21/3)) = C
Substituting this value of C back into the equation for u, we get:
u = e^(e^(3u)/3) * e^(10t/3 + ln(7/e^(e^21/3)))
This is the solution to the given separable differential equation for u, with the initial condition u(0) = 7.
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Write a SIMPLIFIED expression that represents the perimeter of a rectangle who has a length of 4x + 7 and a width of 5x - 4.
Answer:
18x + 6
Step-by-step explanation:
In a rectangle, the opposite side lengths are congruent and have the same measurement. In solving the perimeter, add all sides together:
(4x + 7) + (4x + 7) + (5x - 4) + (5x - 4)
Combine like terms (terms with the same variable, as well as same amount of variable):
(4x + 4x + 5x + 5x) + (7 + 7 - 4 - 4)
(8x + 10x) + (14 - 8)
18x + 6
18x + 6 is your simplified expression that represents the perimeter of the rectangle.
~
For how many positive integers "n" does 1+2+...+n evenly divide 6n?
a) 3
b) 5
c) 7
d) 9
e) 11
(b) 5.Let's first express 1 + 2 + ... + n as the sum of an arithmetic series:
1 + 2 + ... + n = n(n+1)/2
Now, we need to find the positive integers n for which 6n is divisible by n(n+1)/2, or equivalently, for which n+1 is divisible by 3.
If n+1 is divisible by 3, then either n+1 = 3, 6, 9, ... or n+1 = 4, 7, 10, .... The first case gives n = 2, 5, 8, ... and the second case gives n = 3, 6, 9, ....
Thus, there are 5 possible values of n: 2, 3, 5, 6, and 9.
An arithmetic series is a sequence of numbers where each term is obtained by adding a constant value to the previous term. This constant value is called the common difference. For example, the sequence 2, 5, 8, 11, 14, ... is an arithmetic series with a common difference of 3. The formula for the nth term of an arithmetic series is: a_n = a_1 + (n-1)d, where a_n is the nth term, a_1 is the first term, n is the position of the term in the sequence, and d is the common difference. The sum of the first n terms of an arithmetic series can be calculated using the formula: S_n = n/2(a_1 + a_n).
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I already asked this question but could not see the answer
All the correct expression in each steps are,
⇒ Step 1; (m³ + m²n + mn² - m²n - mn² - n³)
( By multiplication distributor )
⇒ Step 2; m³ - n³
( By combine like terms)
What is Multiplication?To multiply means to add a number to itself a particular number of times. Multiplication can be viewed as a process of repeated addition.
Given that;
The expression to prove is,
⇒ (m - n) (m² + mn + n²)
Now, We can simplify as;
⇒ (m - n) (m² + mn + n²)
Step 1;
⇒ (m³ + m²n + mn² - m²n - mn² - n³)
( By multiplication distributor )
Step 2;
⇒ m³ - n³
( By combine like terms)
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How many months in the year have thirty-one days
There are 7 months in the year that have thirty-one days.
These months are January, March, May, July, August, October, and December.
There are seven months in the Gregorian calendar that have thirty-one days: January, March, May, July, August, October, and December.
This pattern of months with 31 days followed by months with fewer days repeats throughout the year.
This pattern was established by the Roman calendar, which had ten months totaling 304 days in a year.
The months of January and February were later added by King Numa Pompilius to align the calendar with the lunar year.
The months of January and February initially had 29 and 28 days respectively, but in 45 BC, Julius Caesar added one day to January and one day to August, which was originally a 30-day month, to make them both 31-day months.
In the Gregorian calendar, which is the most widely used calendar in the world, January, March, May, July, August, October, and December all have 31 days.
The remaining five months have fewer days, with February having 28 days most of the time, and 29 days in a leap year.
Knowing the number of days in each month is important for various reasons, such as planning events, scheduling appointments, and calculating pay periods.
There are several mnemonics used to remember the number of days in each month, such as "30 days hath September, April, June, and November, all the rest have 31, except February, with 28 days clear, and 29 in each leap year."
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Let f : A -> B and g: C-> D be continuous functions. let us define a map f x g : A x C -> B x D by the equation f x g(a,c) = (f(a),g(c)). show that f x g is continous.
For any ε > 0, there exists a δ > 0 such that for any (a, c) in A x C, if ||(a, c) - (a_0, c_0)|| < δ, then ||(f(a), g(c)) - (f(a_0), g(c_0))|| < ε. This shows that the map f x g is continuous.
To show that the map f x g : A x C -> B x D is continuous, we need to demonstrate that it preserves the continuity of the individual functions f and g.
Let (a_0, c_0) be an arbitrary point in A x C, and let ε > 0 be given. Since f is continuous, there exists δ_1 > 0 such that for any point a in A, if ||a - a_0|| < δ_1, then ||f(a) - f(a_0)|| < ε/2.
Similarly, since g is continuous, there exists δ_2 > 0 such that for any point c in C, if ||c - c_0|| < δ_2, then ||g(c) - g(c_0)|| < ε/2.
Now, let δ = min(δ_1, δ_2). Consider any point (a, c) in A x C such that ||(a, c) - (a_0, c_0)|| < δ. This implies that both ||a - a_0|| < δ and ||c - c_0|| < δ, which in turn implies that ||f(a) - f(a_0)|| < ε/2 and ||g(c) - g(c_0)|| < ε/2.
By the triangle inequality, we have: ||(f(a), g(c)) - (f(a_0), g(c_0))|| = ||(f(a) - f(a_0), g(c) - g(c_0))|| <= ||f(a) - f(a_0)|| + ||g(c) - g(c_0)|| < ε/2 + ε/2 = ε.
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