This video is for a precalculus audience but if perfectly suited for a calculus lecture for trigonometric substitution. Use the proper pythagorean trigonometric function to simplify the radical. For more math shorts go to www.MathByFives.com

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Visit http://ilectureonline.com for more math and science lectures! In this video I will graph polar equation r^2=(2^2)[sin2(theta)], the lemniscate. Next video in the polar coordinates series can be seen at: http://youtu.be/lbdYN9S9aPs

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Dressing formal today for Yay Math’s tackling of linear and absolute value inequalities. It’s basically graphing with shading. The fun part is, we celebrate all forms of artistic shading on the graph, so try your doodling skills out here, while you learn graphing. We extend the learning to absolute value graphing as well, with a…