Can someone help me with this Integral?
integral from 0 to 5 (x+1/(sqrt(x+4))
The correct answer is 20/3.
P.S. I tried u- substitution but it didn't work for me.

Question

Can someone help me with this Integral?
integral from 0 to 5 (x+1/(sqrt(x+4))
The correct answer is 20/3.
P.S. I tried u- substitution but it didn't work for me.

hartnn · Answer

is it $\large \int \limits_0^5 \dfrac{x+1}{\sqrt{x+4}}dx$
the substi. of  $u=\sqrt{x+4}$ should work.

anonymous · Answer

ok I'll try it again. I used u=x+4

hartnn · Answer

ohh...try $u=\sqrt {x+4}$
not quite difficult :)

hartnn · Answer

so, did you get it ? or still trying ?

anonymous · Answer

still trying to work it out.. trying to find x

hartnn · Answer

find x ?
in terms of u ?
see whether u get x= u^2 -4

anonymous · Answer

then is du= 1/2sqrt(x+4) ?

hartnn · Answer

yes.

anonymous · Answer

ok i got it thanks!

hartnn · Answer

happy to help :)
welcome ^_^