Question

The maximum value of this = (M say ) ?

Answer 1

\[\Huge 3^x + 5^x -9^x+15^x-25^x\]

Answer 2

Options:
3<M<5
0<M<2
9<M<25
5<M<9

Answer 3

what is the range of x?

Answer 4

not given

Answer 5

We could differentiate and find where f'(x) = 0 but that would take a while to do lol..

@DLS

Answer 6

obviously...looking at t..for any +ve value of x ..the result will be negative ..so we have to use the least value of x.try x=0...so we get 3-2=1. op.b} bro ;)

Answer 7

@genius12 a^x can never be =0 i thought on that

Answer 8

@dls anything raised to - infinity is zero

Answer 9

NO.

Answer 10

\[\Huge (25352)^{\infty} \neq 0\]

Answer 11

i said minus infinity :)

Answer 12

oops misread that :P

Answer 13

\[\Huge (0.241212)^{-\infty} \neq 0\]
still

Answer 14

you can't generalize it^

Answer 15

anyway my answer is b} (i posted above)

Answer 16

Actually it is correct

Answer 17

;)

Answer 18

logic seems correct!