If \( 2 x+3 y=\alpha, x-y=\beta \) and \( k x+15 y=r \) are 3
\( \m...
If \( 2 x+3 y=\alpha, x-y=\beta \) and \( k x+15 y=r \) are 3
\( \mathrm{P} \) concurrent normal of parabola \( y^{2}=\lambda x \) then value of
W \( k \) is:
(1) 3
(2) 4
(3) 5
(4) 7
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