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How to find the length of a Parabola

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Danny Maefengea
Danny Maefengea 2020-9-10
评论： Ameer Hamza 2020-9-10
Hi there, How do I find the length of the parabola given by this equation? Equation: y = 1/20x^2 -5.
Thank you for your help.

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KSSV
KSSV 2020-9-10
x = linspace(-10,+10,10^3) ;
y = 1/20*x.^2 -5 ;
dx = diff(x) ;
dy = diff(y) ;
L = sum(sqrt(dx.^2+dy.^2) );

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