what is the derivative of 3x^2? 6x 3x 9x 6 your score 40/100

Explanation:

Step1: Recall power - rule for derivatives

The power - rule states that if $y = ax^n$, then $y^\prime=anx^{n - 1}$, where $a$ is a constant and $n$ is a real number.

Step2: Identify $a$ and $n$ in $y = 3x^2$

Here, $a = 3$ and $n = 2$.

Step3: Apply the power - rule

$y^\prime=(3\times2)x^{2 - 1}=6x$.

Answer:

A. 6x