Originally Posted by
jarudo Hi, I've got a level curve
T(x,y) = 2x - y / x^2 + y^2
at T = 0
If i put T in i get
0 = 2x - y / x^2 + y^2
So what i did at first was multiply out the bottom to get
0 = 2x - y
y=2x Mr F says: Good.
But then i thought of inversing it first before i multiplied out so i got Mr F thinks: Uh oh. Nothing good ever comes from a "But then I thought ...."
0 = x^2 + y^2 / 2x - y Mr F says: Yep, I was right.
This is utter rubbish. How can you possibly take the reciprocal of the left hand side of 0 = 2x - y / x^2 + y^2 and get zero!!! You should know better - isn't this a 2nd year university level mathematics subject you're enrolled in.
x^2 + y^2 = 0
which one is right? am i allowed to inverse it first?
whats goin owwwnnnn?!