# Real world well formulated examples of non linear optimization problems

I'm trying to find around the web some real world examples of non linear optimization problems. I currently need examples of:

• Non restringed optimziation ( $\max$/$\min$ $f(x)$ for $x\in\mathbb{R}^{n}$ or with $x_{i}>0$)
• Lineary restringed optimization
• Convex optimization
• Separable optimization
• Non-convex optimization
• Geometric optimization
• Fraccional optimization
• complementary optimizacion

Also, any real-world example of optimization problem would be very much apreciated.

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Is this homework? –  Jonathan Christensen Dec 19 '12 at 18:52
Is for the introduction of a work, yeah. –  José D. Dec 19 '12 at 19:25
So you want us to just do your research for you? –  Jonathan Christensen Dec 19 '12 at 19:29
No, I just wanted to know where can i search. First answer is being quite helpfull :) –  José D. Dec 19 '12 at 19:45