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f(x)={2-|x^2+5x+6|,x!=2 and a^2+1,x=-2 ...

`f(x)={2-|x^2+5x+6|,x!=2 and a^2+1,x=-2 ` Then the range of ` a ,` so that `f(x)` has maxima at `x=-2,` is (a)`|a|geq1` (b) `|a|<1` (c)`a >1` (d) `a<1`

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