Calculus 2: Polar Coordinates (3 of 38) Why Use Polar Coordinates?

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In this video I will answer why polar coordinates are necessary even when there's already a handy Cartesian coordinates. Answer: sometimes the math is just easier to solve a specific problem in polar than Cartesian coordinates.

Next video in the series can be seen at:
  1. Michel van Biezen
  2. ilectureonline
  3. ilectureonline.com
  4. Mike
  5. Mike van Biezen
  6. van Biezen
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Комментарии
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To integrate (r^2-x^2)^(1/2), use trigonometric substitution. The answer is given the ilectureonline.com trig substitution lecture series #3. And the result integrating dx from 0-1 is π*r^2. It was neat to work through that and get the same answer with both methods.

richardsmith
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r d theta is the arc subtended by the angle d theta, which is the highet not the base ?

dinamustafa
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How does the base of a triangle equal R.dTHETA

tonyr