MY CART (5)

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

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade:
        
If (1+x+2x²)^10=a′+a1x+a2x²+.....+a20x^20,then a′+a2+a4+........a20 is equal to 
8 months ago

Answers : (1)

Arun
22021 Points
							
When x = 1
 
Then ao + a1 +a2+ a3+ a4+........+a20 = 4^10
 
When x = -1
 
ao -a1+a2-a3 +a4- ............+a20 = 2^10
 
Now add both the equations
 
(ao + a2 + a4+ a6+......+ a20) = 1/2 (4^10 + 2^10)
 
 
Hope it helps
8 months ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


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

  • 731 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