The problem us integrate : $\displaystyle \frac{1}{x \sqrt{x^2+25}}dx $ I worked it out to here $\displaystyle \frac{5secT}{5tanT} dT$ 1. Is this right so far and 2. Im a little confused on how to proceed from there.
Follow Math Help Forum on Facebook and Google+
Well, ASSUMING what you did up to there was right then use... $\displaystyle \sec(x) = \frac{1}{\cos(x)}$ and $\displaystyle \tan(x) = \frac{\sin(x)}{\cos(x)}$
Good start. Extra factor of 5 in the numerator.
Thats kind of what i thought so it should be $\displaystyle \frac{secT}{5tanT}dT$
Originally Posted by x5pyd3rx Thats kind of what i thought so it should be $\displaystyle \frac{secT}{5tanT}dT$ No the 5's cancel. 5/5 = 1...
View Tag Cloud