Help needed with solving an integration

[eogotenks]

some help needed here

can someone help me to solve this integration

_______
√x2 + 16 dx

 

[treehugger]

Re: some help needed here

thats equivalent to taking

∫ 16 sec^3(Θ) dΘ, where Θ = arctan(x/4). would that help?

 

[eogotenks]

Re: some help needed here

yeah, i think i can do it from there, thanx bro.

 

[treehugger]

Re: some help needed here

i think it is still not all trivial from there on..

 

[jawadasheikh]

Re: some help needed here

u can use direct identity of integration.