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 Jan 26 awarded Popular Question Nov 22 accepted Prove that for any square matrix, an invertible matrix B exists, so that BA is triangular Nov 22 asked Prove that for any square matrix, an invertible matrix B exists, so that BA is triangular May 13 awarded Caucus Dec 12 accepted Solve $11 \cdot 16^{1/(n-1)} = 16^{n/(n-1)} - 10$ Dec 12 comment Solve $11 \cdot 16^{1/(n-1)} = 16^{n/(n-1)} - 10$ Thank you for helping me. I will mark your answer as accepted as soon as possible. Dec 12 asked Solve $11 \cdot 16^{1/(n-1)} = 16^{n/(n-1)} - 10$ Sep 21 accepted Trigonometry: Solve equation for $\alpha$ Sep 16 comment Trigonometry: Solve equation for $\alpha$ Thanks for the answer, I will now try to solve it using your advices. Sep 16 comment Trigonometry: Solve equation for $\alpha$ We have just learned some basic identities, which I have already tried using them, without any success. Sep 16 revised Trigonometry: Solve equation for $\alpha$ added 184 characters in body; edited tags Sep 16 asked Trigonometry: Solve equation for $\alpha$ Jul 16 comment Finding the inverse function, is there a technique? Thanks so much! That was exactly the solution I was looking for, very useful in general for other needs. Jul 16 accepted Finding the inverse function, is there a technique? Jul 16 comment Finding the inverse function, is there a technique? Thank you for commenting, I have edited my post to match my needs. What do you mean by 'completing the square'? Jul 16 awarded Commentator Jul 16 revised Finding the inverse function, is there a technique? added 17 characters in body Jul 16 asked Finding the inverse function, is there a technique? Jun 29 awarded Supporter Jun 29 comment What is the inverse of $f(n)=\frac{n^2+n}{2}$? Thank you for clarifying! I really appreciate it.