General Mathematical Function in MATLAB

Common mathematical functions are often used and provided in the literature MATLAB function is as follows:

Here is an example of using trigonometric functions:

Trigonometry Functions	Description
acos	inverse cosine
acosh	inverse hyperbolic cosine
acot	inverse cotangen
acoth	inverse hyperbolic cotangen
acsc	inverse cosecan
acsch	inverse hyperbolic cosecan
asec	inverse secan
asech	inverse hyperbolic bag
salty	inverse sine
asinh	inverse hyperbolic sine
atan	inverse tangent
atanh	inverse hyperbolic tangent
cos	cosine
cosh	hyperbolic cosine
cot	cotangen
coth	hyperbolic cotangen
csc	cosecan
csch	hyperbolic cosecan
sec	secan
sech	hyperbolic secan
sin	sine
sinh	hyperbolic sine
tan	tangent
tanh	hyperbolic tangent

1. In the command window, type:

>> Edit

2.Press enter, then appeared MATLAB Editor and you type in the following programs :

clear all '

CLC;

x = [0:10:180];% generate the data point

y1 = sin (x * pi/180);% calculation data sine x

y2 = cos (x * pi/180);% calculating the cosine of data x

out = [x 'y1' y2 ']

3. After finish typing or copying  program above, save it in the directory c: / mytraining, gide the name 'training02.m'

4. Ensure your file storage directory is contained in the list MATLAB directory search. You can learn how to do that in directory management article. Then type the name of the file training02 twithout extension:

>> training02

5. Press Enter, then the program will run and produce output in the window of the data x, y1, and y2

Besides MATLAB also provides other mathematical functions such as

Exponential Function	Description
exp	Exponential
log	natural logarithm
log10	logarithm base10
log2	logarithm base 2
sqrt	root

If see table functions above , you may be confused, how to use that functions? The easiest method to find out how to use the function is as follows:

1. Suppose you want to know how to use MATLAB functions to log10, type the following at the command window:

>> help log10

2.Press enter, then you will get the information you want as follows:

Common log10 (base 10) logarithm.

Log10 (X) is the base 10 logarithm of the elements of X.

Complex results are produced if X is not positive.

See also LOG, log 2, EXP, LOGM.

3. So how to use it is as follows:

>> X = 100;

>> Y = log10 (x)

b =

       2