Matlab Tutorial for Beginners
Written by: Zixu Zhu
Email:
sz_jamesrei@hotmail.com
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A very convience tool of matlab 7.0 for graphing
If you don’t like coding and still want to see the behavior of a function or two functions, the easiest way to do that in MatLab 7.0 is using the “funtool” function. First, type “funtool” in the Command Window like this:
Then, 3 windows(Figures) will show up:
1.Figure 1:
    It is the graph of function f which will be defined in Figure 3.
2.Figure2:
    It is the graph of function g which will also be defined in Figure 3.
3.Figure3:
a.Function input windows:
    “f=”: type in the expression of f function with variable x, the default expression is “x”
    Example for f=x^2:
    “g=”: same as f function, type in the expression of g function , the default expression is “1”
    Example for g=sin(x):
b.Range of x window(“x=”):
    Input the range of x in “x=” window, the format is “[starting value, ending value]”
    For Example, if we want x from -3pi to 3pi:
c.“a=” window:
    This is window is to set the value of “a” which is a factor of f. It may shift, shrink or enlarge the function f. The default value is ˝.
d.operation panel
    As you see, you can do almost all the common opertions between these two functions or just one function itself. The result plot will show up in Figure 2 or Figure 3.
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