**Chapter 4**

**Beyond the Basics**

In this chapter, we describe some of the finer points of MATLAB and review in more detail some of the concepts introduced in Chapter 2. We explore enough of MATLAB’s internal structure to improve your ability to work with complicated functions, expressions, and commands. At the end of this chapter, we introduce some of the MATLAB commands for doing calculus.

**Suppressing Output**

Some MATLAB commands produce output that is superfluous. For example, when you assign a value to a variable, MATLAB echoes the value. But, as we mentioned briefly in Chapter 2, you can suppress the output of a command by putting a *semicolon* after the command. Here is an example.

**>> syms x**

**>> y = x + 7**

y=

x+7

**>> z = x + 7;**

**>> z**

z=

x+7

The semicolon ...

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