A difficult calculus problem

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A difficult calculus problem

發表  dalcde 于 周日 9月 19, 2010 11:31 am

We've got a curve y = x2. For every point in quadrant I, we can draw a line which is normal to it, which we call a normaline. Each normaline intersects with the curve in quadrant II. Find the largest possible x-value of the intersection between a normaline and the curve in quadrant II. Hence find the equation for that normaline.

Refer to the video below if you don't understand the question I typed above.
This is a video about the problem with a solution.
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dalcde
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