This video reviews how to find volume of a solid with known cross sections.

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Visit http://MathMeeting.com for Free videos on the quadratic formula and all other topics in algebra.

How to approach a problem dealing with matrix multiplication in the form Ax=B. The second part of the question is solved in this video http://www.youtube.com/watch?v=-sN7t1rkdgo

Multivariable double and triple integrals that can be written as a product of single integrals are discussed. Area and volume elements are introduced.

Sal differentiates h(x)=5x^_+7, and evaluates the derivative at x=16. This can actually be done quite easily using the Power rule! Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-rules/ab-diff-negative-fraction-powers/e/differentiate-fractional-powers?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Watch the next lesson: https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-rules/ab-diff-negative-fraction-powers/v/radical-functions-differentiation-intro?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB Missed the previous lesson? https://www.khanacademy.org/math/ap-calculus-ab/ab-derivative-rules/ab-diff-negative-fraction-powers/v/negative-powers-differentiation?utm_source=YT&utm_medium=Desc&utm_campaign=APCalculusAB AP Calculus AB on Khan Academy: Bill Scott uses Khan Academy to teach AP Calculus at…