I'm stuck on this. Any help you can give would be great! If is given by: and is given by: Find the total length of the astroid described by and . (The astroid is the curve swept out by as ranges from to )
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The formula for arc length can be remembered as $\displaystyle \int_a^b\sqrt{dx^2+dy^2}=\int_a^b\sqrt{\left(\frac {dx}{dt}\right)^2+\left(\frac{dy}{dt}\right)^2}\,d t.$
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