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Let f(x)=a x^2-b|x|, where aa n db are c...

Let `f(x)=a x^2-b|x|,` where `aa n db` are constants. Then at `x=0,f(x)` has a maxima whenever `a >0,b >0` a maxima whenever `a >0,b<0` minima whenever `a >0,b<0` neither a maxima nor a minima whenever `a >0, b<0`

A

A maxima whenever ` a gt 0, b gt 0`

B

A maxima whenever ` a gt 0, b lt 0`

C

Minima whenever ` a gt 0 , b gt 0`

D

Neither maxima nor minima whenever ` a gt 0 , b lt 0`

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A
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