Ashwin Muralidharan IIT Madras
Last Activity: 13 Years ago
Hi Menka,
The system of lines passes through the origin (as is evident from the given eqn).
So use y=mx, you'd get a cubic in "m". For which m1,m2,m3 are the roots.
Find:
1) m1m2m3
2) m1m2 + m2m3 + m3m1
3) m1+m2+m3
from the equation, and use m1m2=-1.
And using this condition, elimintae m1,m2,m3 from the three equations, and find "a".
Best Regards,
Ashwin (IIT Madras)