Assume x and y are functions of t. Evaluate dy/dt.

xy - 5x + 2x^3 = -70; dx/dt=-5, x=2, y=-3

1 answer

xdy/dt + ydx/dt - 5dx/dt + 6x^2dx/dt = 0

2dy/dt - 2(-5) - 5(-5) + 6(25)(-5) = 0

solve for dy/dt