fitzgilbert
New member
- Joined
- Feb 4, 2008
- Messages
- 1
Find envelope of the family of curves x^2cos? + y^2sin? = a^2 where ? is the parameter
I differentiated eq1 with respect to theta and got
-x^2sin theta + y^2cos theta
which is eq 2 but i just cant figure out how to isolate The theta in such a way that i can sub it back into eq 1
thanks
Fitzgilbert
I differentiated eq1 with respect to theta and got
-x^2sin theta + y^2cos theta
which is eq 2 but i just cant figure out how to isolate The theta in such a way that i can sub it back into eq 1
thanks
Fitzgilbert