Question

I need help please:

Answer 1

the questions is:

Answer 2

2(e^2-e)

Answer 3

can u please show me how u got the answer?

Answer 4

make substitution sqrt(x)=y

Answer 5

yes i reach to the point where i get (e^u)/u but then i dont know how to integrate this

Answer 6

\[\sqrt{x}=y \implies dx=2dy.\]
\[\int\limits_{1}^{2}2e^ydy=2(e^2-e)\]

Answer 7

ooookay, i get it now.... Thanks :]

Answer 8

sorry, it will be dx=2ydy

Answer 9

well its good you understood;)