## Using Global Variables

Using Global Variables Engineers often need to estimate the pressures and volumes of a gas in a container. ideal gas law provides one way of making the estimate. The law is . RT I p = V More accurate estimates can be made with the van der Waals equation: RT a p= V -b...

## Optimization of an Irrigation Chanel

Optimization of an Irrigation Chanel Figure 3.2-3 shows the cross section of an irrigation channel. A preliminary analysis has shown that the cross-sectional area of the channel should be 100ft2 to,carry the desired water-flow rate. To minimize the cost of concrete...

## PROBLEMS

Problems You can find the answers to problems marked with an asterisk at the end of the text. Section 3.1 1.* Suppose that y = – 3 +ix. For x =0, 1, and 2, use MATLAB to compute the following expressions. Hand check the answers. a.’ Iyl b. .JY\ c. (-5...

## Working with Data Files

Working with Data Files A typical ASCII data file has one or more lines of text at the beginning. These might be comments that describe what the data represents, the date it was created, and who created the data, for example. These lines are called the header. One...

## Summary

Summary MATLAB supplies very many functions. In Section 3.1 we introduced just some of the most commonly used mathematical functions. You should now be able to use the MATLAB help to find other functions you need. If necessary, you can – create your own...