Question

Calcule a derivada na função F ( x ) = 4 x ², no ponto X 0 = 2

Answer 1

f(x)=4x²

derivada

f'(x)=4.2.x
f'(x)=8x

no ponto

f'(2)=8.2
f'(2)=16

Answer 2

derivada da função potencia 
$f(x)=a^n\\\\f'(x)=n*a^{n-1}$
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$f(x)=4x^2$

$f'(x)=2*4x^{2-1}\\\\f'(x)=8x^1\\\\f'(x)=8x$

no ponto x=2
$f'(x)=8x\\\\f'(2)=8*2\\\\f'(2)=16$