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f(x)={:{(2-,|x^(2),+,5x,+,6|",",xne-2),(...

`f(x)={:{(2-,|x^(2),+,5x,+,6|",",xne-2),(a^(2),+1",",x=-2):}`,then the range of a, so
that f(x) has maxima at x=-2 is

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The correct Answer is:
`a in (-1, 1)`
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