Integrate between 2 and 3 the fractions -2 / (2x+1) + 1 / (x-1) thanks
Follow Math Help Forum on Facebook and Google+
Originally Posted by gracey Integrate between 2 and 3 the fractions -2 / (2x+1) + 1 / (x-1) thanks Use the standard result $\displaystyle \int \frac{1}{ax + b} \, dx = \frac{1}{a} \, \ln |ax + b| + C$
Originally Posted by mr fantastic Use the standard result $\displaystyle \int \frac{1}{ax + b} \, dx = \frac{1}{a} \, \ln |ax + b| + C$ Just want to add, if you have trouble remembering this standard result (as I always do), do a u-substitution and use the easier standard result $\displaystyle \int \frac{1}{x} \, dx = \ln |x| + C$.
thank you both so much
View Tag Cloud