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KengaRu [80]
2 years ago
11

Which equation goes with the graph

Mathematics
1 answer:
Rus_ich [418]2 years ago
3 0
Link is scam. literally cap. don’t use it or what do ever!
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Solve the following equation with the initial conditions. x¨ + 4 ˙x + 53x = 15 , x(0) = 8, x˙ = −19
Katen [24]

x''+4x'+53x=15

has characteristic equation

r^2+4r+53=0

with roots at r=-2\pm7i. Then the characteristic solution is

x_c=C_1e^{(-2+7i)t}+C_2e^{(-2-7i)t}=e^{-2t}\left(C_1\cos(7t)+C_2\sin(7t)\right)

For the particular solution, consider the ansatz x_p=a_0, whose first and second derivatives vanish. Substitute x_p and its derivatives into the equation:

53a_0=15\implies a_0=\dfrac{15}{53}

Then the general solution to the equation is

x=e^{-2t}\left(C_1\cos(7t)+C_2\sin(7t)\right)+\dfrac{15}{53}

With x(0)=8, we have

8=C_1+\dfrac{15}{53}\implies C_1=\dfrac{409}{53}

and with x'(0)=-19,

-19=-2C_1+7C_2\implies C_2=-\dfrac{27}{53}

Then the particular solution to the equation is

\boxed{x(t)=\dfrac1{53}e^{-2t}(409cos(7t)-27\sin(7t)+15)}

8 0
3 years ago
What are common numbers of the numbers 15 45 90
Alex787 [66]

Answer:

If you are talking about common factors, the common factors of 15 are 15, 5, 3, and 1. The common factors of 45 are 45, 9, 5, 3, and 1. Common factors are numbers that a number can be divided by. Like 35 / 5, 5 is a common factor of 35.

Step-by-step explanation:


5 0
3 years ago
A collector bought a rare coin for $30. The coin is now valued at $37.50. What is the percent increase in value?​
AlladinOne [14]

Answer:

30

Step-by-step explanation:

5 0
3 years ago
If g(x)=3/4x+2,find g(-12)
Triss [41]

Answer:

g(-12) = -7

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Does anyone know how to do this?
nekit [7.7K]
That look hard what subject is it
7 0
3 years ago
Read 2 more answers
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