Badiuddin askIITians.ismu Expert
Last Activity: 14 Years ago
Dear manan
this problem can be solve easly by hozinisation methord
y2 -4ax =0
lx+my+n=0 or -(lx +my)/n = 1
put the value of 1 in the above equation
y2 -4ax{-(lx +my)/n} =0
or ny2 + 4alx2 +4amxy =0
this is the pair of equation ,apply the condition of perpendicularity
n+ 4al =0
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