Consider two planes P1:2x+by−z=3,P2:x−2y+z=2 and a plane P3 passin – InterviewSolution

1.	Consider two planes P1:2x+by−z=3,P2:x−2y+z=2 and a plane P3 passing through intersection of planes P1 and P2 such that it is at unit distance from origin,Then the number of value(s) b is(where b∈Z,−10≤b≤0)
Answer» Consider two planes $P_{1} : 2 x + b y - z = 3, P_{2} : x - 2 y + z = 2$ and a plane $P_{3}$ passing through intersection of planes $P_{1}$ and $P_{2}$ such that it is at unit distance from origin,Then the number of value(s) $b$ is (where $b \in Z, - 10 \leq b \leq 0$ )

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