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Question Number 101558 by mhmd last updated on 03/Jul/20

$$ify=sin2xisthesolutionofdifferintialequation$$$$\frac{d^{2}y}{{dx}^2}+4y=kthenthekis.......$$

Answered by bemath last updated on 03/Jul/20

$${\mathrm{y}}^{\prime }=2\cos 2\mathrm{x}\Rightarrow {\mathrm{y}}^{″}=-4\sin 2\mathrm{x}$$$${\mathrm{y}}^{″}+4\mathrm{y}=-4\sin 2\mathrm{x}+4\sin 2\mathrm{x}=0=\mathrm{k}★$$

Commented by mhmd last updated on 03/Jul/20

$$thankyousir$$

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