tentukan y' jika x-xy+y^2 = 2

jawab

d{x - xy + y² - 2} /dx =
1 - (1.y  + xy') + (2y y') = 0
1 - y - xy' + 2yy' = 0
-xy' + 2yy' = y - 1
y'(- x + 2y) =  y - 1

y' = (y - 1)/(2y - x)