Question

Answer the following:

Find the range of the following function.

f(x) = 1 + 2^x + 4^x 

Answer 1

f(x) = 1 + 2^x + 4^x 

Since, 2^x > 0, 4^x > 0

∴ f(x) > 1

∴ The range of function f = `(1, ∞)`