(adsbygoogle = window.adsbygoogle || []).push({}); Couple of questions/comments on this problem. Why the SDT? Out of all the examples in the bookn either max or min optimization problems don't do the SDT. They do the first derivative test to determine critical values to solve the problem. Second question is my primary and secondary equations set up right? This the primary equation:Code (Text):

A 51 meter length of wire is cut into two parts.

The first part is fashioned into a rectangle that is twice as long as it is wide.

The second part is fashioned into a square.

How much of the originial wire is used for each shape

if the shapes' combined area is a minimum?

Use the second derivative test(S.D.T.) to determine the minimum.

[tex]A = xy + x^2[/tex]

Secondary:

[tex]51 = 2(2x + y) + 4x[/tex]

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Optimization Problems

**Physics Forums | Science Articles, Homework Help, Discussion**