Editor
Editor
 Sep 18, 2022
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$\frac{\text{d}}{\text{d}x}(\frac{1}{(az-b)^{7}})$=
Difficulty: Easy
A: 
$-\frac{7}{(x-b)^{8}}$
B: 
$\frac{-7}{(ax-b)^{8}}$
C: 
$\frac{7a}{(az-b)^{8}}$
D: 
$-\frac{7a}{(az-b)^{8}}$
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