tag:blogger.com,1999:blog-8157389572117183339.post3874145325434553287..comments2023-08-17T17:27:49.730+10:00Comments on Wordtography (((:: Elisahttp://www.blogger.com/profile/11190787629624081854noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-8157389572117183339.post-80850404474684622032012-02-11T12:38:12.808+11:002012-02-11T12:38:12.808+11:00Like Sin(2A)? Or Cos(2A)?
To integrate Cos(2A) dA...Like Sin(2A)? Or Cos(2A)?<br /><br />To integrate Cos(2A) dA<br /><br />Let x = 2A<br /><br />dx/dA = 2<br /><br />dA = dx/2<br /><br />So you get<br /><br />Integral of Cos(x) dx/2<br /><br />Move 2 outside<br /><br />You get 1/2 the integral of Cos(x)<br /><br />= Sin(x)/2 + c<br /><br />But x = 2A<br /><br />Therefore, Sin(2A)/2 + c<br /><br />And this would be better on paper, so I guess, get someone to teach you properly.Toanhttps://www.blogger.com/profile/03688928706812831077noreply@blogger.com