The recurrence relation for the coefficients of the power series solution is given by:
For n = 0: a₀ = 0.
For n > 0: aₙ = -[32aₙ₋₂ + n(n-1)*aₙ₋₂]/[n(n-1) - x].
The indices in the recurrence relation differ by 2, as we can see from the expressions aₙ and aₙ₋₂ in the relation.
Let's consider the differential equation: (16 + x²)y'' - xy' + 32y = 0.
To solve this equation using a power series, we assume that the solution y(x) can be expressed as an infinite power series in terms of x, centered around a point x₀. The power series has the general form:
y(x) = ∑[n=0 to ∞] aₙ(x - x₀)ⁿ.
Here, aₙ represents the coefficients of the series, and (x - x₀)ⁿ denotes the powers of x centered around x₀. Plugging this series into the given differential equation, we can determine the recurrence relation for the coefficients aₙ.
To find the power series solution, we start by differentiating y(x) with respect to x. Using the power series expansion, we have:
y'(x) = ∑[n=0 to ∞] n*aₙ(x - x₀)ⁿ⁻¹, y''(x) = ∑[n=0 to ∞] n(n-1)*aₙ(x - x₀)ⁿ⁻².
Next, we substitute these expressions for y'(x) and y''(x) back into the original differential equation:
(16 + x²) * ∑[n=0 to ∞] n(n-1)aₙ(x - x₀)ⁿ⁻² - x * ∑[n=0 to ∞] naₙ(x - x₀)ⁿ⁻¹ + 32 * ∑[n=0 to ∞] aₙ(x - x₀)ⁿ = 0.
Now, we simplify the equation by expanding the products and rearranging terms:
∑[n=0 to ∞] (n(n-1)*aₙ(x - x₀)ⁿ⁻² + 32aₙ(x - x₀)ⁿ) + x² * ∑[n=0 to ∞] n(n-1)aₙ(x - x₀)ⁿ⁻² - x * ∑[n=0 to ∞] naₙ(x - x₀)ⁿ⁻¹ = 0.
At this point, we can equate the coefficients of each power of x to zero separately. This gives us the following equations for the coefficients aₙ:
For n = 0: (n(n-1)*a₀(x - x₀)ⁿ⁻² + 32a₀(x - x₀)ⁿ) = 0.
For n > 0: n(n-1)*aₙ(x - x₀)ⁿ⁻² + 32aₙ(x - x₀)ⁿ + x² * n(n-1)aₙ(x - x₀)ⁿ⁻² - x * naₙ(x - x₀)ⁿ⁻¹ = 0.
Simplifying these equations further, we obtain the recurrence relation for the coefficients aₙ:
For n = 0: 32a₀ = 0.
For n > 0: aₙ = -[32aₙ₋₂ + n(n-1)*aₙ₋₂]/[n(n-1) - x].
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Complete Question:
Consider the following differential equation : (16 + x²)y" - xy' + 32y = 0; xo = 0.
Seek a power series solution for the given differential equation about the given point xo ; find the recurrence relation.
The indices differ by _____.
Evaluate the function.
f(x) = -3x2 + 3x + 7
Find f(8)
Answer:
f(8)=-161
Step-by-step explanation:
f(x) = -3x^2 + 3x + 7
f(x) = -3x2 + 3x + 7
f(8)= -3(8)^(2) + 3(8) + 7= -192+24+7=-161
Answer:
f(8) = -161
Step-by-step explanation:
The question is asking us to evaluate the function.
In this problem, the function is:
\(\large{\textsf{$ f(x) = -3x^2 + 3x + 7 $}\)
Plug in 8 for x:
\(\large\text{$ f(8) = -3(8)^2 + 3(8) + 7 $}\)
Simplify.
\(\large\text{$ f(8) = -3 * 64 + 24 + 7 $}\)
\(\large\text{$f(8) = -192 + 31 $}\)
\(\large\text{ f(8) = -161}\)
Therefore, f(8) = -161.
lost-time accidents occur in a company at a mean rate of 0.5 per day. what is the probability that the number of lost-time accidents occurring over a period of 8 days will be no more than 2? round your answer to four decimal places.
The required the probability that accidents occur no more than 2 days in 8 days is 0.144.
What is Probability?Probability is tied in with assessing or computing how likely or 'plausible' something is to occur. The opportunity of an occasion happening can be depicted in words, for instance 'certain', 'unimaginable' or 'logical'. In math, probabilities are constantly composed as portions , decimals or rates with values somewhere in the range of 0 and 1.
According to question:We have,
Probability(p) of lost-time accidents occur in a company at a mean rate of 0.5 per day.
Then, the Probability(q) of accident is not occur is 1 - 0.5 = 0.5.
The likelihood that a mishap doesn't happen (q) is then determined utilizing the accompanying supplement rule.
p =0.5 , q = 0.5
Each probability is calculated using:
P = ⁿCₐpᵃqⁿ⁻ᵃ
The probability that accidents occur no more than 2 days in 8 days is
P(x≤2) = P(0) + P(1) + P(2)
P(x≤2) = ⁸C₀p₀p⁰q⁸⁻⁰ + ⁸C₁p¹q⁸⁻¹ + ⁸C₂p²q⁸⁻²
P(x≤2) = (0.5)^8 + 8(0.5)(0.5)^7 + 28(0.5)^2(0.5)^6
P(x≤2) = 37(0.5)^8
P(x≤2) = 37(0.00390625) = 0.144
Hence, the probability that accidents occur no more than 2 days in 8 days is 0.144.
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Help!! It should be easy it’s 7th grade math
Answer:
The watermelon candies taste $0.13 more.
Step-by-step explanation:
First, in order to find out how much each candy costs per ounce, you have to take the cost and divide it by the number of ounces. 3.48 divided by 12 is 0.29, so the watermelon candies cost $0.29 per ounce. 1.38 divided by 8 is 0.16, so the chewy chocolates cost $0.16 per ounce. In order to find how much more the watermelon candies cost, we have to subtract the cost of the watermelon candies by the cost of the chocolate candies. 0.29-0.16=0.13, so the watermelon candies cost $0.13 more than the chocolate candies.
Lisa earned $31 each week delivering newspapers she delivered newspapers for 2 weeks.How much money did Lisa earn two weeks?
Answer: she earns $62 in two weeks
Step-by-step explanation:
Lisa gets 31 dollars a week for 2 weeks so all you have to do is multiply 31 x 2. If you did all of those correctly you would get $62 for your answer.
91 more than a square of a number
is the square root of 3 rational?
Answer:
1.5
Step-by-step explanation:
Anybody? Showing the work too plz?
(2,3), (4,-7) midpoint
Answer:
(3, -2)
Step-by-step explanation:
2+4 = 6
3-7 = -4
6/2 = 3
-4/2 = -2
The vertex of a quadratic function is (5,-6), what is the equation of the axis of symmetry in this function?
Answer:
x = 5
Step-by-step explanation:
A quadratic equation:
f(x) = y = a*x^2 + b*x + c
Has a vertex in a point:
(h, k) such that:
h = -b/2a
and:
k = f(-b/2a)
And the axis of symmetry (this is the line that cuts the graph in two halves) is:
x = h.
In this case, the vertex is (5, -6)
Then the axis of symmetry is:
x = 5.
Question 4
Write an algebraic expression for the following.
Joe spent three dollars less than twice as much as Fernando did.
Use x for the variable.
Question 5
Ayliah is 7 years more than 1/2 of Deb's age
use x for the variable
A car travels 63 miles in 30 minutes. If the car travels at a constant speed, how many miles does the car travel in 50 minutes?
Answer: 105
Step-by-step explanation: If the car is going 63/30 is 2.1 which is the miles/minute, then to get to 50 miles you’d have to multiply 2.1 x 50 = 105 miles in 50 minutes.
What is the final sales price of a telescope that originally cost $400 but was marked up 32?
Answer:
$528
Step-by-step explanation:
I'm assuming you mean up 32%?
If Bob produces 36 or fewer items in a week, he is paid X dollars per item. If Bob produces more than 36 items in a week, he is paid X dollars per item for the first 36 items and 3/2 times that amount for each additional item. How many items did Bob produce last week?
Last week Bob was paid total of $480 for the items that he produced that week and this week Bob produced 2 items more than last week and was paid a total of $510 for the items that he produced this week.
Let's start with the simplest case:
he produced 36 or less items this week.
In this case he produced less than 36 items last week too.
So he was paid the same amount of dollar per item. Using assumptions (1) and (2), we have:
$480 + 2X = $510
⇒2X=510-480$
⇒2X=$30
⇒2X=$30/2
⇒X=$15
He was paid $15 per item.
Last week he received his $480.
480/15= 32 items.
This week he received his $510.
510/15=34 items. Other cases have no solution.
seems your question is incomplete., but most probably the complete question was
If Bob produces 36 or fewer items in a week, he is paid X dollars per item. If Bob produces more than 36 items in a week, he is paid X dollars per item for the first 36 items and 3/2 times that amount for each additional item. How many items did Bob produce last week?(1) Last week Bob was paid total of $480 for the items that he produced that week.(2) This week Bob produced 2 items more than last week and was paid a total of $510 for the items that he produced this week.
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10. Billy and Bob share a lottery win in the ratio 4:7 Billy gets £20. How much
does Bob get?
Answer:
£35
Step-by-step explanation:
20/4=5 (1 ratio)
7*5=35
I need help, again, again, because people keep trolling. :|
-4(3k-6)-4k = -8k+24-4k
can yall solve this plz I want to go to sleep but my mom won't let me until I get my homework done
Answer:
0 (undefined)
Step-by-step explanation:
distribute on the left side first:
-4(3k-6)-4k
so -12k+24-4k
combine like terms
-16k+24
now the right side
-8k+24-4k
combine like terms
-12k+24
so it'll look like this
-16k+24=-12k+24
add -12k to the left
-4k+24=24
so then subtract 24
that'll leave you with 0
Enter the equation of the line in slope-intercept form.
The line parallel to y =
7
4
x + 4 that passes through (−8, 0).
The equation of the line that passes through (−8, 0) is y = .
Answer:
\(y = \frac{7}{4}x +14\)
Step-by-step explanation:
Given
\(y = \frac{7}{4}x + 4\)
Required
Determine the equation of line that passes through (-8,0) and parallel to \(y = \frac{7}{4}x + 4\)
Parallel lines have the same slope.
In \(y = \frac{7}{4}x + 4\)
The slope, m is
\(m = \frac{7}{4}\)
because the general form of a linear equation is:
\(y = mx + b\)
Where
\(m = slope\)
So, by comparison:
\(m = \frac{7}{4}\)
Next, is to determine the equation of line through (-8,0)
This is calculated using:
\(y - y_1 = m(x - x_1)\)
Where
\(m = \frac{7}{4}\)
\((x_1,y_1) = (-8,0)\)
So, we have:
\(y - 0 = \frac{7}{4}(x -(-8))\)
\(y - 0 = \frac{7}{4}(x +8)\)
\(y - 0 = \frac{7}{4}x +\frac{7}{4}*8\)
\(y - 0 = \frac{7}{4}x +7*2\)
\(y - 0 = \frac{7}{4}x +14\)
\(y = \frac{7}{4}x +14\)
Which is the correct label of the parallel lines?
the answer is a || b, or the first option
Rewrite the equation below so that it does not have fractions.
3/4x-5=3/8
Do not use decimals in your answer.
Answer:
x=
6
43
Step-by-step explanation:
pasos
4
3
x−5=
8
3
Agrega 5 a ambos lados.
4
3
x=
8
3
+5
Convertir 5 a la fracción
8
40
.
4
3
x=
8
3
+
8
40
Como
8
3
y
8
40
tienen el mismo denominador, sume sus numeradores para sumarlos.
4
3
x=
8
3+40
Suma 3 y 40 para obtener 43.
4
3
x=
8
43
Multiplica los dos lados por
3
4
, el recíproco de
4
3
.
x=
8
43
×(
3
4
)
Multiplica
8
43
por
3
4
(para hacerlo, multiplica el numerador por el numerador y el denominador por el denominador).
x=
8×3
43×4
Realiza las multiplicaciones en la fracción
8×3
43×4
.
x=
24
172
Reduzca la fracción
24
172
a su mínima expresión extrayendo y anulando 4.
x=
6
43
10.An order is written 700mg of ampicillin PO, the drug is supplied is liquid form as1g/3.5ml how much of the liquid should be given?
5.25ml 2.55ml 6.25ml 2.45ml
11.The order state meperidine 75mg IM every 6hours PRN pain. The pharmacy sends you a vial that states 25mg/2ml.how many ml can the nurse give in 24 hours?
12.The order state to give the patient 0.75g of antibiotic PO every 4 hours for 7 days The drug comes in 250mg tables. How many tablets should the patient take? 2tab. 3tab .4tab. 15tab.
13.Order is written for 1000ml of normal saline to be administered IV over 10hours.Thedrop factor on the IV tubing is 15gtt/ml. what is the IV rate?
50ml/hr.at50gtt/min 100ml/hr.at 25gtt/min 100ml/hr.at 100gtt/min 100ml/hr. at 15gtt/min
14.a post operative order is written for 15gr of codeine every 4 hours PRN for pain. Each dose given will contain how much milligrams of codeine
15.Robitussin cough syrup 225mg.PO is ordered the bottle read 600mg in 1oz how much cough syrup 225mg PO is ordered the bottle read600mg in 1oz how much cough syrup should be given in ml's?
Where the above are given,
10. The nurse should give 2.45ml of the liquid medication.
11. The nurse can give 24ml of meperidine in 24 hours.
12. The patient should take 42 tablets of the antibiotic.
13. The IV rate is 100ml/hr at 1500gtt/min with a 15gtt/ml drip factor.
14. Each dose of codeine contains 15000mg.
15. The patient should be given 2.67oz (approximately) of the cough syrup.
What is the explanation for the above ?10. To determine how much of the liquid should be given, we can set up a proportion
1g/3.5ml = 700mg/x
Cross-multiplying,
1g * x = 700mg * 3.5ml
x = (700mg * 3.5ml) / 1g
x = 2450mg*ml/g
Therefore, the amount of liquid to be given is 2.45ml.
11. The order states meperidine 75mg IM every 6 hours PRN pain, and the pharmacy sends a vial that contains 25mg/2ml. To calculate how many ml can be given in 24 hours, we need to consider the frequency and duration.
In 24 hours, there are 24/6 = 4 doses to be given. Each dose contains 75mg of meperidine.
To find the volume (ml) of each dose, we can set up a proportion -
25mg/2ml = 75mg/x
25mg * x = 75mg * 2ml
x = (75mg * 2ml) / 25mg
x = 6ml
12. To calculate the number of tablets the patient should take, we need to consider the dosage and the duration.
Each tablet contains 250mg of the antibiotic.
To find the number of tablets for the total dosage, we can set up a proportion -
250mg/1 tab = 0.75g/x
250mg * x = 0.75g * 1 tab
x = (0.75g * 1 tab) / 250mg
x = 0.003 tab
Since we cannot take a fraction of a tablet, the patient should take 1 tablet every 4 hours for 7 days, resulting in a total of 1 * 6 * 7
= 42 tablets.
13. To determine the IV rate, we need to calculate the number of drops per minute.
The formula to calculate the IV rate in drops per minute (gtt/min) is -
IV rate (ml/hr) = Total volume (ml) / Total time (hr)
IV rate (gtt/min) = IV rate (ml/hr) * Drop factor (gtt/ml)
IV rate (ml/hr) = 1000ml / 10hr = 100ml/hr
IV rate (gtt/min) = 100ml/hr * 15gtt/ml =
1500gtt/min
Therefore, the IV rate is 100ml/hr at 1500gtt/min.
14. To determine the amount of milligrams of codeine in each dose, we need to convert grams to milligrams.
1 gram (g) = 1000 milligrams (mg)
15 grams (gr) = 15 * 1000mg = 15000mg
Therefore, each dose contains 15000mg of codeine.
15. To calculate how much cough syrup should be given in ml's, we can set up a proportion -
225mg/1oz = x ml/600mg
225mg * x = 1oz * 600mg
x = (1oz * 600mg) / 225mg
x = 2.67oz
Therefore, 2.67oz of cough syrup should be given in ml's.
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Which graph represents the function f(x)=(3)x-2
The function f(x) = (3)x-2 represents a linear equation with a slope of 3 and a y-intercept of -2. So, the correct graph that represents the function f(x) = (3)x-2 is the one that is a straight line that passes through the points (0, -2) and (1, 1).
The slope of the line determines how much the value of y increases or decreases for each unit increase in x. In this case, the slope is positive, which means that the line slopes upwards from left to right. To graph this equation, we need to plot the y-intercept, which is -2 on the y-axis, and then use the slope to find another point on the line. One way to do this is to use the slope-intercept form of a linear equation, which is y = mx + b, where m is the slope and b is the y-intercept.
We can substitute the values of m and b into this equation to get y = 3x - 2. Now, we can choose any value of x and use the equation to find the corresponding value of y. For example, if we choose x = 0, we get y = -2. This gives us one point on the line, which is (0, -2). Next, we can use the slope of 3 to find another point on the line. The slope tells us that for each unit increase in x, y increases by 3. So if we increase x by 1, we get y = (3)(1) - 2 = 1. This gives us another point on the line, which is (1, 1).
We can continue this process to find more points on the line, or we can simply connect the two points we have found to draw the line.
The graph that represents the function f(x) = (3)x-2 is a straight line that passes through the points (0, -2) and (1, 1).
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2 notepads and 3 boxes of pencils cost $18. And 3 notepads and 2 boxes of pencils cost $17. What is the total cost of 5 notepads and 7 boxes of pencils?
The proportional relationship between the total number of minutes, m, that
Bo practices the piano after some number of days, d, can be represented by
the equation m = 60d. At what rate did he practice, in minutes per day?
the rate is 60 minutes per day bo will practice the piano.
what is proportional relationship?
When two variables are correlated in a manner that their ratios are equal, this is known as a proportional relationship. In a proportional connection, one variable is always a constant value multiplied by the other, which is another way to think of them. The "constant of proportionality" is the term used to describe that constant.
Given x and y will have a proportional relationship if the ratio of x to y will be equal for all given values.
the equation m = 60d
The rate is m/d = 60d/d = 60 minutes per day.
Hence, the rate is 60 minutes per day bo will practices the piano.
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Convert the equation into Standard Form.
x^2 + y^2 + 10x - 12y+45 = 0
Answer:
(x−5)^2+(y+6)^2=9
Step-by-step explanation:
Is this triangle congruent?
Answer:
I'm not sure if this is right but I'm gonna say no, the tip of each triangle seems off by just a bit
What is the name of the polynomial based on its degree and number of terms?
8x²+2x¹−3
Given:
The given polynomial is:
\(8x^2+2x^1-3\)
To find:
The name of the polynomial based on its degree and number of terms.
Solution:
Consider the given polynomial:
\(8x^2+2x^1-3\)
Here the highest power of x is 2. It means the degree of the polynomial is 2.
We know that, the second degree polynomial is called quadratic polynomial.
The terms in the given polynomial are \(8x^2,2x^1,-3\). The number of terms in the given polynomial is 3.
We know that, the polynomial that contains three terms is called trinomial.
Therefore, the name of the polynomial based on its degree is quadratic polynomial and based on the number of terms is trinomial.
find+the+z-scores+that+separate+the+middle+24%+of+the+distribution+from+the+area+in+the+tails+of+the+standard+normal+distribution.
To separate the middle 24% from the tails in the standard normal distribution, the z-scores are approximately -0.877 and +0.877.
To find the z-scores that separate the middle 24% of the distribution from the area in the tails of the standard normal distribution, we can follow these steps:
1. Determine the area in the tails: Since the middle 24% is being separated from the tails, we need to find the area in the tails. Since the standard normal distribution is symmetric, each tail will have an area of (100% - 24%) / 2 = 38% / 2 = 19%.
2. Convert the tail area to a z-score: We can use a standard normal distribution table or a calculator to find the z-score corresponding to an area of 19%. This z-score represents the cutoff point between the middle 24% and the tails.
Using a standard normal distribution table or calculator, the z-score that corresponds to an area of 19% in the tail is approximately -0.877.Therefore, the z-scores that separate the middle 24% of the distribution from the area in the tails of the standard normal distribution are approximately -0.877 and +0.877.
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Four times a number decreased by 25
is the same as the opposite of the number. Find the number
Answer:
x = 5
Step-by-step explanation:
Translate the word problem into an equation and solve for x
4x - 25 = -x
Add 25 to both sides
4x = -x + 25
Add x to both sides
5x = 25
Divide both sides by 5
x = 5
How to substitute
-x-3
2x+4y=14
Select three RATIOS that are equivalent to 5:2
The options are...
2:5
10:4
20:50
35:14
55:22 THANKS!
Answer:
10:4, 35:14, 55:22
Step-by-step explanation: