<p>The production function is as follows</p>
<p><span class="math-container">$$f(z)=(z_1+z_2)(z_3+z_4)$$</span></p>
<p>Find the cost function?</p>
<p>What I did is as follows. But I am not sure about my solution. How do you solve it?</p>
<p><a href="https://i.sstatic.net/IRWK3.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/IRWK3.jpg" alt="enter image description here" /></a></p>
<p><a href="https://i.sstatic.net/JOpAy.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/JOpAy.jpg" alt="enter image description here" /></a></p>
<p>*duplicated question</p>

CC BY-SA 4.0
2022-10-16T08:17:28.147Z
Cost function you got is correct.
Amit
CC BY-SA 4.0
2022-10-17T22:29:01.447Z
@Amit can you please look at my question? This question is very important for my exam. I really need to understand it. But I could not solve for part (b) and (c). You provide very good solutions. I will be really happy if you show your solution. Thanks a lot! https://economics.stackexchange.com/questions/52557/finding-pbe-in-incomplete-game
studentp
<self-study><optimization><profit-maximization><cost-functions>
Finding cost function
studentp
# Finding cost function

(Asked by: username_0 on 2022-10-15)

The production function is as follows

$$f(z)=(z\_1+z\_2)(z\_3+z\_4)$$

Find the cost function?

What I did is as follows. But I am not sure about my solution. How do you solve it?

[![enter image description here](https://i.sstatic.net/IRWK3.jpg)](https://i.sstatic.net/IRWK3.jpg)

[![enter image description here](https://i.sstatic.net/JOpAy.jpg)](https://i.sstatic.net/JOpAy.jpg)

\*duplicated question

**Tags:** self-study, optimization, profit-maximization, cost-functions

> **Comments:**
> **username_1**: Cost function you got is correct.  
> **username_0**: @username_1 can you please look at my question? This question is very important for my exam. I really need to understand it. But I could not solve for part (b) and (c). You provide very good solutions. I will be really happy if you show your solution. Thanks a lot! https://economics.stackexchange.com/questions/52557/finding-pbe-in-incomplete-game  

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## 0 answers

