if $sin x = e^{y}$, $0 < x < pi$, what is $\frac{dy}{dx}$ in terms of $x$ \na $-\tan x$ \nb $-cot x$ \nc…

if $sin x = e^{y}$, $0 < x < pi$, what is $\frac{dy}{dx}$ in terms of $x$ \na $-\tan x$ \nb $-cot x$ \nc $cot x$ \nd $\tan x$ \ne $csc x$

if $sin x = e^{y}$, $0 < x < pi$, what is $\frac{dy}{dx}$ in terms of $x$ \na $-\tan x$ \nb $-cot x$ \nc $cot x$ \nd $\tan x$ \ne $csc x$

Answer

Answer:

C. $\cot x$

Explanation:

Step1: 对等式两边求导

对 $\sin x = e^y$ 两边关于 $x$ 求导,根据求导公式 $(\sin x)'=\cos x$,$(e^y)' = e^y\cdot\frac{dy}{dx}$,得到 $\cos x=e^y\cdot\frac{dy}{dx}$。

Step2: 求解 $\frac{dy}{dx}$

因为 $\sin x = e^y$,将其代入上式,可得 $\frac{dy}{dx}=\frac{\cos x}{e^y}=\frac{\cos x}{\sin x}=\cot x$。