1.

The solution of the x \(\frac{dy}{dx} \) = cot y isA. x cos y = CB. x tan y = CC. x sec y = CD. None of these

Answer»

\(\frac{dy}{dx} \) = cot y

Separating the variables, we get,

\(\frac{dy}{coty} = \frac{dx}{x}\)

tan y dy = \(\frac{dx}{x}\)

Integrating both sides, we get,

\(\int\) tan y dy = \(\int\) \(\frac{dx}{x}\)

log sec y = log x + log c

x cos y = c

Hence, A is the correct answer.



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