Question

Range of f(x)=4^x+2^x+1 is?​

Answer 1

Answer:

Step-by-step explanation:

4^x + 2^x + 1 = (2^x)^2 + 2^x + 1

= (2^x + 1 / 2)^2 + 3 / 4 >= 3 / 4 for all x.

thus Range = [3 / 4 , infinity)

Answer 2

Ans is [3/4, infinity). Hope this will help you.