badge image

Enroll For Free Now & Improve Your Performance.

×
User Icon
User Icon
User Icon
User Icon
User Icon

Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
Close

MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

⇐ BackProceed to Checkout ⇒
There are no items in this cart.
Continue Shopping
Menu
Grade: 11 

                        
the set of all the points where the function f(x)=x|x| is twice differentiable is
2 years ago

Answers : (1)

Arun
24742 Points 
							
f(x) = x|x| = x²,  x>0
               = -x²,   x
 
f'(x) = 2x,  x>0
        = -2x,  x
 
f''(x) = 2,    x>0
        = -2,    x
f''(x) exists at every point except x=0
 
Thus f(x) is twice differentiable on R - {0}
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies

Other Related Questions on Differential Calculus

Find the particular integral of 1. (D-2)^4=x^3 e^2x 2. (D^2+4D-12)y=(x-1)e^2x Answer & Earn Cool Goodies
If f(x)=sinx then find (fofof)(a) where a belongs to [0, pi/2] and d/dx(fofof)^x |x=a Answer & Earn Cool Goodies
How to differentiate f(x)=x²(x-2)² which is in the chapter Application of Derivatives...
How to get the nth order derivative of y=cos3x*cos2x
Find limit x tends to 0 for { x.log(1+2tanx) }/(1-cosx)
View all Questions »


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 51 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers To Win!!! Click Here for details