Oliver Spryn
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 Mar 14 comment Equivalent to \begin{align}\int \cos{\left(2x\right)} \ dx\end{align}? Thank you all!! Mar 14 comment Equivalent to \begin{align}\int \cos{\left(2x\right)} \ dx\end{align}? @anon You'd have to dig around to find what I'm references. Mar 14 asked Equivalent to \begin{align}\int \cos{\left(2x\right)} \ dx\end{align}? Mar 12 comment Integration: How to Begin? Hmm... how can we stop thinking in terms of right triangles if the above example uses $\tan{x}$ and $\cos{x}$? Plus, by having a square root, we easily know that it would (in this case) exist as the hypotenuse of the triangle. Mar 12 comment Integration: How to Begin? The only problem is, that I don't understand why this works (or really how to set it up) since we aren't working with a square root here. Mar 12 comment Integration: How to Begin? Whoops, fixed. ;) Mar 12 revised Integration: How to Begin? edited tags Mar 12 comment Why Doesn't This Integral $\int \frac{\sqrt{x^2 - 9}}{x^2} \ dx$ Work? Fixed the above work. Interestingly, it only resulted in a few sign changes. Any further ideas? Mar 12 revised Why Doesn't This Integral $\int \frac{\sqrt{x^2 - 9}}{x^2} \ dx$ Work? deleted 52 characters in body Mar 12 comment Integration: How to Begin? What a coincidence that this question was posted on the same day as mine. Wonder if we're working from the book, at the same time, (from the same school, in the same class)? lol Thank you, Sivaram Mar 12 comment Why Doesn't This Integral $\int \frac{\sqrt{x^2 - 9}}{x^2} \ dx$ Work? (cold chills) ... yes, your right, let me try re-evaluating Mar 12 asked Integration: How to Begin? Mar 12 asked Why Doesn't This Integral $\int \frac{\sqrt{x^2 - 9}}{x^2} \ dx$ Work? Mar 5 comment Divide inside a Radical That really makes everything clear. Thank you! Mar 4 comment Divide inside a Radical Actually, I understand your comment. :) But if you would like to learn how to make square roots, fractions, powers, etc... you can do that by typing to dollar signs in a row, then between the dollar signs, type in LaTeX code. If you are not familiar with LaTeX, Wikibooks has an article on it: en.wikibooks.org/wiki/LaTeX For a quick start, just click the "edit" link underneath my original post, and you can see how I did it. ;) Mar 4 accepted Divide inside a Radical Mar 4 comment Divide inside a Radical I see your comment now. Thank you for the additional details! Mar 4 comment Divide inside a Radical Yes, you're right, according to WolframAlpha: wolframalpha.com/input/… Could you please explain this a bit better so that it would, perhaps, stick better with me? Mar 4 asked Divide inside a Radical Mar 3 awarded Self-Learner