The curve is given by x^2+2r(sqrt(y))=xy
What is dx/dr when y is constant?
x^2+2r√y = xy
If y is constant, it's just like any other dumber, so
2x dx/dr + 2√y = y dx/dr
dx/dr (2x-y) = -2√y
dx/dr = 2√y / (y-2x)
What is dx/dr when y is constant?
If y is constant, it's just like any other dumber, so
2x dx/dr + 2√y = y dx/dr
dx/dr (2x-y) = -2√y
dx/dr = 2√y / (y-2x)