Question Id : 12152 |
Context : JEE Main 2 September 2020 (Evening)
Let f : (–1,$\infty $)$ \to $ R be defined by f(0) = 1 andLet A = {X = (x, y, z)T: PX = 0 and
x2 + y2 + z2 = 1} where
$P = \left[ {\matrix{ 1 & 2 & 1 \cr { - 2} & 3 & { - 4} \cr 1 & 9 & { - 1} \cr } } \right]$,
then the set A :
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