Answer:
We know that equation
of plane passing through points A (x1, y1, z1)
and C(x3, y3, z3) is
(a) Therefore, equation of
plane passing through points (1, 1, ?1), (6, 2, ?5) and (?4, ?2, 3) is given by
(By taking ?1 as common from R3)
[ Rows R2
and R3 are identical]
given points are
collinear. So there are infinite number of planes passing through the given
points.
(b) Equation of
plane passing through the points (1, 1, 0), (1,2, 1) and (?2, 2, ?1) is given
by
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