The condition that one of the pair of li...

The condition that one of the pair of lines `ax^2+2hxy+by^2=0` be conicident with one line of the pair `3x^2+12xy+2y^2=0` and the remaining lines are at right angles, then h (a-b) =

A

a+b

B

ab

C

2ab

D

`a//b`

Text Solution

Verified by Experts

The correct Answer is:

B

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