Find the derivative of:
−
9
x
−
7
x
9
\displaystyle -{9}\sqrt{{{x}}}-\frac{{7}}{{x}^{{9}}}
−
9
x
−
x
9
7
.
Type your answer without fractional or negative exponents.
Use
sqrt(x)
for
x
\displaystyle \sqrt{{{x}}}
x
.
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