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Viefleur [7K]
2 years ago
14

The function yp=3x2+4x is a particular solution to the nonhomogeneous equation y′′−6y′+9y=27x2−18 Find the general solution of t

he nonhomogeneous equation y′′−6y′+9y=27x2−18. (Hint: you need yc.)
Mathematics
1 answer:
olya-2409 [2.1K]2 years ago
8 0

Answer:

y(x)==(c_1+c_2x)e^{3x}+3x^2+4x

Step-by-step explanation:

We are given that  non-homogeneous equation

y''-6y'+9y=27x^2-18

Particular solution of given equation is given by

y_p=3x^2+4x

We  have to find the general solution of the non-homogeneous equation.

Auxillary equation

m^2-6m+9=0

m^2-3m-3m+9=0

m(m-3)-3(m-3)=0

(m-3)(m-3)=0

m=3,3

y_c=(c_1+c_2x)e^{3x}

General solution is given by

y(x)=y_c+y_p

y(x)==(c_1+c_2x)e^{3x}+3x^2+4x

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