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If `p q r!=0` and the system of equation `(p+a)x+b y-c z=0` `a x+(q+b)y+c z=0` `a c+b y+(r+c)z=0` has nontrivial solution, then value of `1/p+b/q+c/r` is `-1` b. `0` c.`0""` d. `not-2`

A

`-1`

B

`0`

C

`1`

D

2

Text Solution

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The correct Answer is:
A
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MCGROW HILL PUBLICATION-DETERMINANTS-EXERCISE (LEVEL 1 SINGLE CORRECT ANSWER TYPE QUESTIONS)
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  8. Suppose a,b,c,x,y epsilon R. Let Delta=|(1,2+ax,3+ay),(1,2+bx,3+by),...

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