[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 29 KB, 506x168, intergration.jpg [View same] [iqdb] [saucenao] [google]
3225871 No.3225871 [Reply] [Original]

hey my first time on /sci
currently doing intergration by parts in maths anyone willing to solve the equation in my pic with workings ?

>> No.3225885

no, workings is too much typing, but here's a hint

e^x cos(x) integration by parts you do twice and end up with e^x cos(x) where you started, but with a negative sign, so you move to the LHS and have a result for 2*integral e^x cos(x), which you then half.

it's a neat trick.

>> No.3225890
File: 74 KB, 328x300, costanza_cancer.jpg [View same] [iqdb] [saucenao] [google]
3225890

>2011
>not doing your homework alone

>> No.3225899

>>3225871
use twice integration by parts each time differentiating the cos() or the e^() until you get the original integral time some constant and then re-express the whole thing to get all the integrals on left and solution will be on right.

>> No.3225917

>>3225871
Actually I just realized you can do the integration by parts 2N times where N is positive integer. So you can do it 4 or even 6 times as well.

>> No.3225948

Reported for homework.
wolframalpha.com has automatic homework solver.

>> No.3225974

>>3225917
why would you do that?