Question

calcule dy/dx em tal que: x2 + xy -y2 =4​

Answer 1

Resposta:

2x+y+x*dy/dx -2y *dy/dx=0

2x+y+dy/dx *(x-2y) =0

dy/dx= -(2x+y)/(x-2y) = (2x+y)/(2y-x)