Expanding a function, MATLAB in Engineering

Assignment Help:

Expanding a function:

The expand function will multiply out terms, and factor will do the opposite:

>> expand((x+2)*(x-1))

ans =

x^2 x-2

>> factor(ans)

ans =

(x 2)*(x-1)

 

The function subs will replace a value for the symbolic variable in an expression. For illustration,

>> myexp = x^3 + 3*x^2 - 2

myexp =

x^3 3*x^2-2

>> x = 3;

>> subs(myexp,x)

ans =

       52

 

With symbolic math, a MATLAB works by the default with rational numbers means that the outcomes are kept in fractional forms. For illustration, executing the addition 1/3 + 1/2 would generally answer in a double value:

>> 1/3 + 1/2

ans =

       0.8333

Though, by making the expression symbolic, the outcome is symbolic also. Any numeric function (example, double) could modify that:

>> sym(1/3 + 1/2)

ans =

5/6

>> double(ans)

ans =

       0.8333

 


Related Discussions:- Expanding a function

Use of built-in colormaps - image processing, Use of built-in colormaps: ...

Use of built-in colormaps: MATLAB has built-in colormaps, it is also possible to generate others by using combinations of any colors. For illustration, the following generates

Reading from a mat-file, Reading from a Mat-File: The load function is...

Reading from a Mat-File: The load function is used to read from various types of files. As with save function, by default the file will be supposed to be a MAT-file, and load

Initializing the data structure - function, Initializing the data structure...

Initializing the data structure - Function: Function is shown as:   >> printcylvols(cyls) Cylinder x has a volume of 169.6 Cylinder a has a volume of 100.5

Gauss, Gauss, Gauss-Jordan elimination: For 2 × 2 systems of equations...

Gauss, Gauss-Jordan elimination: For 2 × 2 systems of equations, there are well-defined, easy solution techniques. Though, for the larger systems of equations, finding solutio

Illustration of passing arguments to functions, Illustration of Passing arg...

Illustration of Passing arguments to functions: Here is an illustration of calling this function: >> printrand() The random # is 0.94 As nothing is passed to

Function strncmp, Function strncmp: The function strncmp compares only...

Function strncmp: The function strncmp compares only the first n characters in the strings and ignores the rest. The initial two arguments are strings to compare, and third ar

Inverse of square matrix, Inverse of square matrix: The inverse is, he...

Inverse of square matrix: The inverse is, hence the result of multiplying the scalar 1/D by each and every element in the preceding matrix. Note that this is not the matrix A,

Illustration of sound signals, Illustration of Sound files: For illust...

Illustration of Sound files: For illustration, the following script generates a subplot which shows the signals from chirp and from train, which is as shown in figure:

Function used in binary search, Function used in binary search: The fu...

Function used in binary search: The function below implements this binary search algorithm. It receives two arguments: the sorted vector and a key (on the other hand, the func

Gauss elimination, Gauss Elimination: The Gauss elimination technique ...

Gauss Elimination: The Gauss elimination technique consists of:    Generating the augmented matrix [A b]    Applying EROs to augmented matrix to obtain an upper trian

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd