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If Delta(x)=|(x^2+4x-3, 2x+4, 13), (2x^2...

If `Delta(x)=|(x^2+4x-3, 2x+4, 13), (2x^2+5x-9, 4x+5, 26), (8x^2-6x+1, 16x-6, 104)|=a x^3+b x^2+c x+d ,` then

A

`a=3`

B

`b=0`

C

`c=0`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B, C
`Delta '(x) = |{:(2x+4,,2x+4,,13),(4x+5,,4x+5,,26),(16x+-6,,16x-6,,104):}|+|{:(x^(2)+4x-3,,2,,13),(2x^(2)+5x-9,,4,,26),(8x^(2)-6x+1,,16,,104):}|`
` =0 +2xx13 xx(0) =0`
`rArr Delta (x) = " constant " rArr a=0,b=0.c=0`
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