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

Calling of function polyval, Calling of Function polyval: The curve do...

Calling of Function polyval: The curve does not appear very smooth on this plot, but that is as there are only five points in the x vector. To estimate the temperature

Illustration of preallocating a vector, Illustration of Preallocating a Vec...

Illustration of Preallocating a Vector: Illustration of calling the function: >> myveccumsum([5 9 4]) ans =     5  14  18 At the first time in the loop, outvec wil

Algorithm for appex subfunction, Algorithm for appex subfunction: The ...

Algorithm for appex subfunction: The algorithm for appex subfunction is as shown:  Receives x & n as the input arguments.  Initializes a variable for running sum of t

True color matrice - image processing, True color matrice: The true co...

True color matrice: The true color matrices are the other way to represent images. The true color matrices are 3-dimensional matrices. The first two coordinates are the coordi

Example of file ploting data, Example of file ploting data: As the oth...

Example of file ploting data: As the other example, a data file called 'compsales.dat' stores the sales figures (in millions) for divisions in a company. Each line in the f

Preallocating a vector, Preallocating a Vector: There are necessarily ...

Preallocating a Vector: There are necessarily two programming techniques that can be used to simulate the cumsum function. One technique is to begin with an empty vector and c

Comparing strings, Comparing strings: There are few functions which co...

Comparing strings: There are few functions which compare strings and return logical true when they are equivalent or logical false when not. The function strcmp compares the s

Displaying the cell arrays, Displaying the cell arrays: There are seve...

Displaying the cell arrays: There are several techniques of displaying the cell arrays. The celldisp function shows all elements of the cell array:   >> celldisp(cellro

Algorithm for the function explaine, Algorithm for the function explaine: ...

Algorithm for the function explaine: The algorithm for the function explaine is as shown:  Print a description of e, the exp function, and how to find the approximate va

Illustration of if - else statement, Illustration of if - else statement: ...

Illustration of if - else statement: The one application of an if-else statement is to check for errors in the inputs to a script. For illustration, a former script prompted t

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