Question

derive e simplique as funções a seguir :
a) y=5.x³+7.x
b)y=x³-2x+5

Answer 1

$5x^3+7x$

mantem a constante e deriva a variavel x
$5*3x^{3-1} + 7*1\\\\5*3x^2+7\\\\\ y'=15x^2+7$

b)
$y=x^3-2x+5\\\\y'=3x^{3-1}-2*1+0\\\\ y'=3x^2-2$

Answer 2

Reposta   a) Y=15$x^{2}$+7

Resposta  b)Y=3$x^{2}$-2


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