Question

I have another question in substitution rule as well

Answer 1

sure!

Answer 2

lnx=u then dx/x=du

e=>1
e^4=>4

Answer 3

\[\int\limits_{1}^{4}u ^{-1/2}du\]

2u^{1/2} 1 to 4

Answer 4

4-2=2

Answer 5

Thank you :)