Verify that y-2sin3x is the solution of the D-E d2ydx2-9y-0

y=2sin 3x dydx #160; = 6cos 3x d^2ydx^2= 18sin 3x d^2ydx^2+9y = 18sin 3x+9(2sin 3x) #160; #160; #160; #160; #160; #160; ...

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General Solution of a Differential Equation

Verify that ...

Question

Verify that $y = 2 sin 3 x$ is the solution of the D.E $\frac{d^{2} y}{d x^{2}} + 9 y = 0$

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$y = 4 s i n 3 x$ is a solution of the differential equation

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