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The pair of equations (p^(2) -1)x + (q^(...

The pair of equations `(p^(2) -1)x + (q^(2) -1) y + r=0 and (p+1) x + (q-1) y + r=0` have infinitely many solutions, then which of the following is true ? `

A

`pq=0`

B

`pq=-1`

C

`pq=1`

D

`pq=-2`

Text Solution

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The correct Answer is:
a
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PEARSON IIT JEE FOUNDATION-LINEAR EQUATIONS AND INEQUATIONS -CONCEPT APPLICATION (LEVEL - 2)
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