Other Math Archive: Questions from April 25, 2023
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20. Solve the IVP \( \begin{array}{c}x^{\prime}=x+2 y \\ y^{\prime}=-5 x-y\end{array} \) with \( x(0)=4, y(0)=1 \).2 answers -
b) Simplify SANAAA sinx-sinx cos²x sin²x
b) Simplify \[ \frac{\sin x-\sin x \cos ^{2} x}{\sin ^{2} x} \]2 answers