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If u(1) = ax + by + c, u(2) = a'x + b'y ...

If `u_(1) = ax + by + c, u_(2) = a'x + b'y + d, u_(3) = ax + by + c', u_(4) = a'x + b'y +d'` then
`u_(1)= 0, u_(2) = 0, u_(3) = 0, u_(4) = 0` from a parallelogram. Then the diagonal.

A

BD can be given by `u_(2)u_(3) - u_(1)u_(4) = 0`

B

BD can be given by `u_(1)u_(2) = u_(3)u_(4) = 0`

C

AC can be given by `u_(1)u_(2) - u_(3)u_(4) = 0`

D

AC can be given by `u_(2)u_(3) = u_(1)u_(4) = 0`

Text Solution

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The correct Answer is:
A
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