Integration questions (1 Viewer)

[tam89]

Hello... just need someone to check my answers for these questions below. Thanks

Integrate:

1) xsinx dx

2) cos √x / √x dx

3) lnx / x dx

These are the answers what i got:

1) -1/2 cosx/ x + c
2) 2(sin√x/ √x) + c
3) (ln x) / 2 + c

 

[Trev]

1)
int. xsin(x²)dx = -1/2*[cos(x²)] + C
2)
int. [cos(√x)]/√x dx = 2sin(√x) + C
3)
Correct.

 

[lucifel]

post in the right forum for god's sake.

 

[acmilan]

It is now, 'twas in the 2 unit forum before I moved it.

 

[Neborg67]

This is the right forum