MATHS study thread. (1 Viewer)

[pLuvia]

Easier way

Spoiler

∫x(x²+1)³ dx

Let u = x²+1
du = 2x dx
du/2 = xdx

I = ∫ 1/2 u³ du
= 1/2 [ u⁴/4] + C
= 1/8 (x²+1)⁴ + C

That should be right

 

[Riviet]

I like the ∫too because it's compact and neat, but i like to also use the slashes when there are boundaries involved such as:

5
/
| f(x) dx
/
0

 

[hopeles5ly]

O_O man i dont get how you people understand that ! aiyah im such a dumbass doing general and failing it as well hehe

 

[Riviet]

O_O man i dont get how you people understand that ! aiyah im such a dumbass doing general and failing it as well hehe

It's ok mate, you can PM me if you need help with general maths.

 

[pLuvia]

Yeh if you don't understand just post it up, or Riviet's offer