This video looks at Testing critical points for local extrema.
This 9-minute video lecture is part 4 of derivatives: introduction to the chain rule.
This 8-minute video lesson continues to cover the Calculus-Derivative: Finding the derivative of y=x^2.
This video looks at the Trapezoidal approximation of area under curve.
This video looks at the Trig substitution with tangent.
This video looks at the Trig and u substitution together (part 1).
This video looks at the Trig and u substitution together (part 2).
This 11-minute video lesson provides an introduction to the triple integral.
This 8-minute video lesson looks at how to use a triple integral to find the mass of a volume of variable density.
This 12-minute video lesson demonstrates how to figure out the boundaries of integration.
This tutorial classifies regions in three dimensions. Comes in useful for some types of double integrals and we use these ideas to prove the divergence theorem.
This video looks at the definition and intuition for Type 2 Regions.
This video looks at the definition and intuition for type 3 regions.
U-substitution is a must-have tool for any integrating arsenal (tools aren't normally put in arsenals, but that sounds better than toolkit). It is essentially the reverise chain rule. U-substitution is very useful for any integral where an expression is of the form g(f(x))f'(x)(and a few other cases). Over time, you'll be able to do these in your head without necessarily even explicitly substituting. Why the letter "u"? Well, it could have been anything, but this is the convention. I guess why not the letter "u" :)
This video looks at another example of using u-subsitution.
This video looks at manipulating the expression to make u-substitution a little more obvious.
This video looks at using u-substitution and "back substituting" for x to simplify an expression.
This video covers example of using u-substitution to evaluate a definite integral.
This video covers doing u-substitution with ln(x).
This 12-minute video gives an example of using a line integral to find the work done by a vector field.