Use the method of variation of parameters to determine the general solution of the given differential equation. y"" — y' = 11t NOTE: Use C₁, C2, and c3 as arbitrary constants. y(t) = ₁ + c₂ et + c3 e²-11 1²2 X

Q: I =S sinux dx

A: To evaluate the given integral.

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Q: Write the product as a sum. sin(8x) cos(9x)

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A: The given integral is: I=∫24 sec-2θ dθ

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A: let do the integration here to find the antiderivative of a function.

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