You need to study Lessons 7 and 8 in my book to prepare for this question.
5(a) is standard integration by parts. Look at how I do my question 1(d) in Lesson 8 as an example of how to deal with a definite integral. My preference is to solve the indefinite integral first, then return to the definite integral to complete the problem.
5(b) is similar to part (a) but you have to get rid of the absolute value first. Look at my question 1(h) back in Lesson 2 for an example of how to deal with an absolute value in an integral. You need to break this integral up into two separate integrals based on where |x| = x and where |x| = -x.
5(c)
is another standard integration by parts integral. Note that arcsinx is inverse sinx. Similar to my 1(c) in Lesson 8.
5(d) is yet another integration by parts.
5(e) is a classic trig integral like I teach in Lesson 7.
5(f) is a classic trig integral like I teach in Lesson 7. More than one way you can solve this one.
5(g) is a classic trig integral like I teach in Lesson 7.
5(h) is a type of trig integral that is not covered in my book. For integrals of this type, you need to use another family of trig identities. Click this link for a handout explaining the identities you need to know:
Math 1700 Trig Product Identities
5(i)
is proven using integration by parts. Here is a hint: