Question

If f(x) = x2 + 7, what is the equation for f'(x)?

A f'(x) - IVX+7
B f'(x) - +X-7
C f''(x) = 5x +7
D f'(x)= 7/8-7

Answer 1

2x

Explanation:

`\bullet\ (x^2)^(\prime)=2x\\\\\bullet\ (7)^(\prime)=0`

`\Longrightarrow f^(\prime )\left( x\right) =\left( x^(2)+7\right)^(\prime ) =(x^2)^(\prime)+(7)^(\prime)=2x`