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 Jan20 awarded Popular Question Jan17 awarded Yearling Nov3 awarded Nice Question Jul2 awarded Curious Feb27 awarded Favorite Question Jan17 awarded Yearling Oct4 comment Find the value of parameter so that the equation has one solution I'm quite disappointed I didn't think of using the derivative. Very clever solution, thanks ! Oct4 accepted Find the value of parameter so that the equation has one solution Oct3 revised Find the value of parameter so that the equation has one solution added 14 characters in body Oct3 asked Find the value of parameter so that the equation has one solution Aug25 awarded Taxonomist Jul22 awarded Famous Question Jun28 accepted Simplify $\cos(n \pi)$ and $\sin(n \pi)$ when n is an integer Jun22 awarded Self-Learner Jun22 awarded Teacher Jun22 answered Simplify $\cos(n \pi)$ and $\sin(n \pi)$ when n is an integer Jun22 comment Simplify $\cos(n \pi)$ and $\sin(n \pi)$ when n is an integer I'm on it, thank you for the help ! Jun22 comment Simplify $\cos(n \pi)$ and $\sin(n \pi)$ when n is an integer Thank you, it does work indeed, what's wrong with the form I used ? (Assumptions -> ...) Maybe you could post this as an answer so I can award you the points Jun22 asked Simplify $\cos(n \pi)$ and $\sin(n \pi)$ when n is an integer May29 awarded Popular Question