let f(x)=1+2x^2+2^2x^4+.....+2^(10)x^(20...

let `f(x)=1+2x^2+2^2x^4+.....+2^(10)x^(20).` The , `f(x)` has

A

More than one minimum

B

exactly one minimum

C

At least one maximum

D

None of these

Verified by Experts

The correct Answer is:

B

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