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.
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 all real values of x obtained from the equation 4^x – (a – 3)2^x +a – 4 = 0 are non – positive then a lies in a)(4,5] b)(0,4) c)(4,infinity) d)none of these

2 years ago

Answers : (1)

Arun
25333 Points
							
let 2^x = t
 
then
 
t^2 – (a – 3)t + a – 4 = 0
 
t^2  + t – (a – 4)t + a – 4 = 0
 
t (t + 1) – (a – 4) (t + 1) = 0
 
t = – 1
 
and 
t = a – 4
 
2^x = a – 4
 
0
 
4
2 years 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

  • 101 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