1. ## integration problems

For #2, should the substitution method be used?

ANy help will be appreciated. Thanks in advanced.

I have a test soon and these questions has been troubling me.

2. Originally Posted by samtrix

For #2, should the substitution method be used?

ANy help will be appreciated. Thanks in advanced.

I have a test soon and these questions has been troubling me.

for #2, yes. set the whole denominator to another variable..
for number 3, have you tried it using partial fractions?
for number 1, have you tried evaluating the integral? k should be 1/3..