Helpful+videos

Kevin Donohue

Washer Method:

http://www.youtube.com/watch?v=E5OOMbz5jZk

Shell Method:

http://www.youtube.com/watch?v=V6nTsxumjgU

Converging improper integral:

http://www.youtube.com/watch?v=5Tz992fOYAA

Arc Length

http://www.youtube.com/watch?v=5fP443JvTUg

Surface Area

http://www.youtube.com/watch?v=-j2eKo84Ef8

Sequences

http://www.youtube.com/watch?v=hc64LUtPjP0

Sum of Geometric Series

http://www.youtube.com/watch?v=mcnblnEsf98

How to find the formula for the nth term of a sequence

http://www.youtube.com/watch?v=lj_X9JVSF8k

Summary of sequences

http://www.youtube.com/watch?v=BsgL0-iOU3o

http://www.youtube.com/watch?v=pdiMJnYt8iY&feature=related

Expressing a decimal as a rational number

http://www.youtube.com/watch?v=7tDK_UjdWOs