integration problem

[hemagoku]

find the anitderivative of following btw reversing multiplication , quotient or chain rules
first one :
integral(x^2 root(x^3 +2))dx
second one :
integral(root(x^2 +1)cosx+(x)/(root(x^2 +1))sinx)dx

how to solve those ? ,i don't want final answer i just want to know how to solve them ,if there is rules or something ,or steps

[SM-Count]

For the love of God, please please please please please use Latex if you're going to post math, pretty please?

Neways:



I decided to give you one answer since it's the only way to show you properly, try the second one for yourself. (I haven't looked at it cause it's ugly, but I'm assuming it's integration by substitution and not by parts, which if it is, bump this thread or someone else might help you.)

Edit: TBH, now that I re-read it, it's a crap explanation, brb with a better explained one.

[hemagoku]

For the love of God, please please please please please use Latex if you're going to post math, pretty please?

Neways:



I decided to give you one answer since it's the only way to show you properly, try the second one for yourself. (I haven't looked at it cause it's ugly, but I'm assuming it's integration by substitution and not by parts, which if it is, bump this thread or someone else might help you.)

Edit: TBH, now that I re-read it, it's a crap explanation, brb with a better explained one.

ya that would be cool thanks ^^ and sry but how use latex ? xD

[SM-Count]

Well you'd have to go to a Latex Editor and take a picture then post the picture. It really doesn't take that long and isn't that annoying, on top of that it makes math so much easier to read.

I'll give you a huge hint for number 2, rewrite the fraction into two fraction with different numerators.

[Psychedeelic]

omg ewww I had a test today with integrals.. but UGLY ones
I'm gona scan it tomorrow, explain that please xD. I failed miserably

[hemagoku]

i have no idea on how to solve the second one ,and partially understood the first one

[MrTwilliger]

Ahh i remember all this crap from back in high school, damed if i know how i figured it out back then. Looks like a pile of crap to me >_>

[PsYch008]

Ahh i remember all this crap from back in high school, damed if i know how i figured it out back then. Looks like a pile of crap to me >_>

ditto. i went through trig in junior year... but screw math.

[SM-Count]

It's calculus, not trig.

Before I solve two, can double check that this is the problem. (See Attachment)

Which step/section do you not understand in number 1?

[Jstar1]

I wish I could help you but I don't know what latex is. How do you use the software and where do you get it?

[SM-Count]

http://rogercortesi.com/eqn/index.php

[Jstar1]

thanks

but it looks like its going to be hard memorizing all that code

[hemagoku]

i understand them both now ^^ asked some friends ,thanks SM-Count ^^