Recent content by lreichardt

Thanks all, figured it out.

1. Oil is being pumped continuously from a certain oil well at a rate proportional to the amount of oil left in the well; that is, dy/dt=ky, where y is the amount left in the well at any time t. Initially, there were 1,000,000 gallons of oil in the well, and 6 years later there were 500,000...

so, (x/1)(quotient rule of x/(x-1)? = (x/1)(-x/x-1)=-x^2/x-1

How do I take the derivative of f(x)=ln[x/(x-1)]? Thanks!