Haunting calc. min/max problem, Help

[PrincessOfSteel92]

a.)

The lower corner of a page of width "k" is folded over as such just to reach the inner edge of the page (see my figure)


Find the width x of the part folded over when the length of the crease y is a minimum.



b.) Find the width of the part folded over when the area of the triangle folded over is a minimum.





http://img839.imageshack.us/img839/3999/saa0.jpg is the image you can refer to .




No idea in **** where to start this, please show me how to begin this straighten out of line of thought. :shock: :?

 

[galactus]

Here is a link to a simialr problem that may help:

I do not think yours is as involved, though.

http://mathforum.org/library/drmath/view/51944.html