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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

A

`|a|ge1`

B

`|a|lt1`

C

agt1

D

alt 1

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