Answer
verified.
Work Step by Step
$\frac{df}{dx}=\lim\limits_{h\to 0}\frac{f(x+h)-f(x)}{h}$
$=\lim\limits_{h\to 0}\frac{3(x+h)^2-3x^2}{h}=\lim\limits_{h\to 0}\frac{6hx+3h^2}{h} = 6x+0=6x$
Hence Verified.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.