Optimization

[nikchic5]

Could anyone help me by walking me through this problem...I am stuck!! Thanks soo very much!

The upper right-hand corner of a piece of paper, 40 in. by 20 in., as in the figure, is folded over to the bottom edge. How would you fold it so as to minimize the length of the fold? In other words, how would you choose x to minimize y?

I drew the image but I do not know how to paste it up here. Thanks

And the answer choices are 12 in, 13 in, 14 in, 15 in, and 16 in.
Thanks so much!

 

[skeeter]

sometimes you just need to LOOK for a solution.

 

[galactus]

I gave an answer to this post yesterday. Didn't you see it?. The solution is one of your choices. Just finish the differentiation

http://www.freemathhelp.com/forum/viewtopic.php?t=13020

As for how to post your picture>Save it as a gif file. Use ImageShack to host your drawing by clicking browse, choosing your file, and then copy and paste the link at the bottom. When you paste, don't forget to enclose it in

Give it a try. Good luck

 

[nikchic5]

ok

Hello. Okay I worked it ou and I got 15...is that correct?

 

[jolly]

Re: ok

Hello. Okay I worked it ou and I got 15...is that correct?

Show how you got 15.