Q 1211634529.     If `5^x+(2sqrt3)^(2x) ≥ 13^x`, then the solution set for `x` is

A

`[1, 10 ]`

B

[−∞, 2]

C

`[2, ∞]`

D

[ 0, 2 ]

HINT

`(5/13)^x + (12/13)^x ≥ 1` ` (5, 12, 13 )` is triplet so we can written as `(cosα)^x + (sinα)^x ≥ 1`

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