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/sci/ - Science & Math

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2707680

Anonymous Tue Mar 15 04:56:02 2011 No.2707680 [Reply] [Original]

hey /sci/ anons how about we put you math skills to the test?
Solve
(2cos^2 x) + (sin2x) = 0

>>	Anonymous Tue Mar 15 04:57:02 2011 No.2707689 It didn't work, but not I have a boyfriend.

>>	Anonymous Tue Mar 15 04:58:02 2011 No.2707693 >>2707680 I just pretended to shake salt on the back of my tongue in my mind, I do not taste salt. I do not wish to do with my hands and mouth open as it will look like I'm giving an air BJ. Total crock of shit.

>>	Inurdaes !V1sPhobos. Tue Mar 15 05:01:02 2011 No.2707709 File: 5 KB, 239x258, 1297739976244.png [View same] [iqdb] [saucenao] [google] >>2707680 Oh OP, so close to doing it. Oh so close.

>>	Anonymous Tue Mar 15 05:03:02 2011 No.2707715 I see what you just did there, OP

>>	Anonymous Tue Mar 15 05:06:02 2011 No.2707732 I don't care about the air BJ, I tried it anyway as nobody can see me. Guess what, you really do taste salt.

>>	Anonymous Tue Mar 15 05:07:02 2011 No.2707736 >>2707732 I'm a queermosexual, so I still didn't give a shit.

>>	Anonymous Tue Mar 15 05:13:02 2011 No.2707773 File: 60 KB, 294x361, AH-HAHAHA-FAGGOT.jpg [View same] [iqdb] [saucenao] [google] >>2707693 >>2707693

>>	Anonymous Tue Mar 15 05:30:02 2011 No.2707856 Why bother? when we have calculators http://www.wolframalpha.com/input/?i=%282cos^2+x%29+%2B+%28sin2x%29+%3D+0

>>	Anonymous Tue Mar 15 05:42:02 2011 No.2707901 >>2707680 (2cos^2 x) + (sin2x) = 0 2cos^2 x + 2cosx sinx = 0 cos^2 x + cosx sinx = 0 cosx(cosx + sinx) = 0 cosx = 0 or cosx + sinx =0 second is the same as tanx = -1 solve those on whichever domain of x they give you