10-4 Areas and Lengths in Polar Coordinates

极坐标中的面积与弧长

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Video 1: Areas/Lengths in Polar Coordinates

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10-4 Areas and Lengths in Polar Coordinates

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小节练习

1. Area in polar coordinates: A =

int r dtheta 1/2 int r^2 dtheta int r^2 dtheta pi*r^2

2. To find the area enclosed by a polar curve, the limits of integration are:

The x-intercepts The angles where the curve closes 0 and 2pi always The y-intercepts

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