3 years ago

Need help.

1 answer:

3 0

$f(x)=5x+9\\
f'(x)=5$
The derivative is constant. It's equal 5 for any argument.

$f(x)=\dfrac{6}{x}\\
f'(x)=-\dfrac{6}{x^2}\\
f'(-2)=-\dfrac{6}{(-2)^2}=-\dfrac{6}{4}=-\dfrac{3}{2}$

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