Question 633373
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{dy}{dx}\ =\ y\tan(x)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \frac{dy}{y}\ =\ \tan(x)\,dx]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \int\,\frac{dy}{y}\ =\ \int\,\tan(x)\,dx]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ln\left|y\right|\ =\ \ln(\sec(x))\ +\ \ln(C)]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \ln\left|y\right|\ =\ \ln(C\sec(x))]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ C\sec(x)]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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