1.

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

Answer»

`[-34, 0]`
`[0, 34]`
`[-34, 34]`
`[34, OO)`

ANSWER :A


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