If dydx+3cos2xy=1cos2x,x∈(−π3,π3), and y(π4)=43, then y(−π4) – InterviewSolution

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1.	If dydx+3cos2xy=1cos2x,x∈(−π3,π3), and y(π4)=43, then y(−π4) equals :
Answer» If $\frac{d y}{d x} + \frac{3}{{cos}^{2} x} y = \frac{1}{{cos}^{2} x}, x \in (\frac{- π}{3}, \frac{π}{3}),$ and $y (\frac{π}{4}) = \frac{4}{3}$ , then $y (- \frac{π}{4})$ equals :

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