3 years ago

Find the derivative of f(x) = 7 divided by x at x = 1.

Mathematics

2 answers:

Wewaii [24]3 years ago

6 0

just took test it is x= -7

julsineya [31]3 years ago

3 0

I find it best to switch everything exponents when taking derivatives.
F(x) = 7/x
Same as..
F(x) = 7x^-1
Take derivative..
F'(x) = -7x^-2
Plug in x = 1
F'(1) = -7(1)^-2
F'(1) = -7

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