\(\text { If } y=\left(x-y \frac{d x}{d y}\right) \sin \left(\frac{x}{y}\right) \text { if } x(1)=\frac{\pi}{2} \text { …
Q1
\(\text { If } y=\left(x-y \frac{d x}{d y}\right) \sin \left(\frac{x}{y}\right) \text { if } x(1)=\frac{\pi}{2} \text { then find } \cos (x(2)) \text {. }\)
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