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weqwewe [10]
3 years ago
5

Differential Equations Problem

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

Answer:

y=\frac{t^2e^{2t}}{3}+ce^{2t}

Step-by-step explanation:

We have given differential equation \frac{dy}{dt}-2y=t^2e^{2t}

We know that linear differential equation is given by \frac{dy}{dt}+Py=Q

On comparing with standard equation P = -2 and Q= t^2e^{2t}

Now integrating factor IF=e^{-Pdt}

IF=e^{-2dt}=e^{-2t}

Now solution of differential equation is given by

y\times IF=\int\ IF\times Q\ dt

y\times e^{-2t}=\int\ e^{-2t}\times t^2e^{2t}\ dt

y\times e^{-2t}=\frac{t^2}{3}+c

y=\frac{t^2e^{2t}}{3}+ce^{2t}

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What are two differences between factors and multiples
Feliz [49]

Answer:

Factor is a number that can be multiplied with a particular number to obtain another number. Conversely, multiples are the product, which is reached after multiplying the number by an integer. The number of factors of a particular number is limited, but the number of multiples of a given number is endless.

Step-by-step explanation:

4 0
3 years ago
Please help WILL MARK BRAIN LEST 5 STAR RATING THANKS ON YOUR PAGE 
kotegsom [21]

Part A

So the coefficient would be the number that is with a variable. The coefficient of 7.50h is 7.50. The variable is h, variables can be a letter or symbol that stands for something in a equation. For this question, h stands for the number of hours Corinne works. The constant is the number that is alone in the equation. That doesn't have a variable with it. In this equation the constant would be the number 40.


Part B

To solve this I will plug in 25 into "h" in and 300 for "s" in the equation 7.50h + 0.20s + 40 and then solve.


1. 25 * 7.50 = $187.5.

2. 0.20 * 300 = $60

3. Add it all together: $187.50 + $60 = $247.50 + $40 = $287.50


Part C

If Corrine gets a raise and earns $9 an hour the coefficient would change. It would be 9h instead of 7.50h.


5 0
3 years ago
Read 2 more answers
A person has 20 coins, all nickels and dimes, worth $1.65. How many nickels are there?
BartSMP [9]
Let x represent the amount of dimes
Let y represent the amount of nickles

So since he has 20 coins, x + y = 20
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So 10x + 5y = 165 (in cents)
         2x +  y = 33
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so x = 13 and y = 7

Hope this helps :)
3 0
2 years ago
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ElenaW [278]

Answer:

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Step-by-step explanation:

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It is given that, Sin (3x-27) = Cos (5x+5).

Hence, we can write (3x-27) + (5x + 5) = 90

⇒ 8x = 90+27-5 =112

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5 0
3 years ago
Please help me understand how to solve this(include steps)
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