E
Editor
Sep 18, 2022
$\frac{\text{d}}{\text{d}x}(\frac{a+x}{a-x})$=
Difficulty: Easy
A:
$\frac{-2a}{(a-x)^{2}}$
B:
$\frac{2a}{(a-x)^{2}}$
C:
$\frac{a}{(a+x)^{2}}$
D:
$\frac{1}{(a+x)^{2}}$
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ID: 63273db8ca83163ac3a1021b