Question

If f(x)=−8x^4sin(1/x) if x≠0
0 if x=0

determine whether or not f′(0) exists.

Answer 1

Exist because left han derivative and right hand derivative are equal ..... Check it i have some techinical problem about my notepad

Answer 2

Exist because left han derivative and right hand derivative are equal ..... Check it i have some techinical problem about my notepad