However, if you work from the circle equation given by skeeter in post # 10, you don't get to the result indicated in the OP. If you work from the incorrect hyperbola equation, you still don't get to the result indicated in the OP. In summary: you have been asked to do the impossible. There is a mistake in the problem.
That's correct for the hyperbola equation.For the equation of ,
which simplifies to:
I'm not sure if this is correct or not ,but it's how I did it... please elaborate
Here you plug in the value for the derivative that you got before:Edit:
For , I got the following:
SOMEHOW simplifies to:
Any idea how (3) simplifies to Middle section of (4)?
and then you get the common denominator, add the fractions, etc., etc., etc.
Although your numerator is exactly what was needed, I think the solutions I got from my professor were wrong lol. No wonder I killed off a few brain cells trying to work this one out, lol. Everyone was getting something different...
More importantly, your expression for dy/dx for the hyperbola equation was different to mine, although you still said I did it correctly?