Question

Integrate--> \[\int\limits_{}^{}\sqrt{1+u^{2}}du\]

Answer 1

I can't recall what technique would be used to integrate this.

Answer 2

assume u = tan x

Answer 3

so trig substitution?

Answer 4

yes .. du = sec^2xdx

Answer 5

This is what I am looking at here:

Answer 6

http://in.answers.yahoo.com/question/index?qid=20100303103406AAzKlz5

Answer 7

seems all right.

Answer 8

Oh, i didn't type that solution. It was given with the assignment. I wasn't sure what all the steps were but I will look at the answers.yahoo link.

Answer 9

i though you did i and i checked values too .. seems all right.