by Guest » Sun Jun 23, 2019 2:22 pm
Chikis wrote "If y^2 - x^2 = 5(y-x)^2, find x:y"
First if x= y then y- x and y^2- x^2 are 0 so any value of x= y is a solution.
If y is not equal to 0 then we can divide by y- x to get y+ x= 5, y= 5- x.
All pairs (x, x) and (x, 5- x) satisfy the equation and any solution is one of those two forms.
(What does this have to do with "integrate sinx"?)