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The maxinum value M of 3^(x)+5^(x)-9^(x)...

The maxinum value M of `3^(x)+5^(x)-9^(x)+15^(x)-25^(x)`, as x varies over reals, satisfies-

A

3 lt M lt 5

B

0 lt M lt 2

C

9 lt M lt 25

D

5 lt M lt 9

Text Solution

Verified by Experts

The correct Answer is:
A, B
`Mlea+b-ab`
`Mlt1-(a-1)(b-1)" min is zero"`
hence `0ltMlt2`
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