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If f(x)=ax^(7)+bx^(3)+cx-5, a, b, c are ...

If `f(x)=ax^(7)+bx^(3)+cx-5, a, b, c` are real constants, and `f(-7)=7`, then the range of `f(7)+17 cos x` is

A

`[-34, 0]`

B

`[0, 34]`

C

`[-34, 34]`

D

`[34, oo)`

Text Solution

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The correct Answer is:
A
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