Asked by Kumkum

Find the length of the parabola y^2=4ax cut off the line x=a about the x-axis
Answered by Steve
do you want the arc length (above and below the x-axis), or the surface when the arc (above or below the axis) is rotated about the x-axis?
Answered by Kumkum
2^1/2/a^1/2log|a+1/2|
Answered by Kumkum
√2/√a+log|a+√2|
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