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The function Delta = |(x,a,a),(b,x,a),(b...

The function `Delta = |(x,a,a),(b,x,a),(b,b,x)| ` (a,b are +ve constants) has

A

Local maxima at `sqrt(ab)`

B

Local minima at `sqrt(ab)`

C

Local maximum at `-sqrt(ab)` and local minima at `sqrt(ab)`

D

Local minima at `-sqrt(ab)` and local maxima at `sqrt(ab)`

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