How would I calculate the integral of dx/(C-x) C is a constant. Thanks
Follow Math Help Forum on Facebook and Google+
A simple substitution: $\displaystyle u = C-x \Rightarrow du = -dx$. Therefore $\displaystyle \int \frac{dx}{C-x} = -\int \frac{du}{u} = -\ln |u| + k = -\ln |C-x| + k$ (k is another arbitrary constant).
Thanks Richard. It's coming back now. I has been a few years since I have done this!
View Tag Cloud