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If a, b gt 0 and Delta (x)|(x,a,a),(b,x,...

If `a, b gt 0 and Delta (x)|(x,a,a),(b,x,a),(b,b,x)|`, then

A

`Delta(x)` is increasing in `(-sqrt(ab),sqrt(ab))`

B

`Delta(x)` is decreasing in `(sqrt(ab),oo)`

C

`Delta(x)` has a local minimum at `x=sqrt(ab)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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