Differentiation, MATLAB in Mathematics

Assignment Help:

Differentiation:

The derivative of a function y = f(x) can be written as follows

107_Differentiation.png

or f  '(x) and is defined as the rate of change of the dependent variable y with respect to x. The derivative is the slope of line tangent to the function at given point.

The MATLAB has a function polyder that will find the derivative of a polynomial. For illustration, for the polynomial x3 + 2x2 - 4x + 3, that would be represented by the vector

 [1 2 - 4 3], the derivative is found by:

>> origp = [1 2 -4 3];

>> diffp = polyder(origp)

diffp =

3 4 -4

that shows that the derivative is the polynomial 3x2 + 4x - 4. The function polyval can be used then to find the derivative for certain values of x; for illustration for x = 1, 2, and 3:

>> polyval(diffp, 1:3)

ans =

3 16 35

The derivative can be written as folows 

692_Differentiation1.png

and can be approximated by difference equation.


Related Discussions:- Differentiation

Strings as vectors, Strings as Vectors: The Strings are considered as ...

Strings as Vectors: The Strings are considered as vectors of characters-or in another words, a vector in which each and every element is a single character-so numerous vector

Illustration of writing to files, Illustration of Writing to files: He...

Illustration of Writing to files: Here is the other illustration in which a matrix is written to a file. At First, an arbitrary 2 × 4 matrix is generated, and then it is writt

User input in the while loop - program, User input in the while loop: ...

User input in the while loop: Here is an illustration of running this script: >> readonenum Enter a positive number: -5 Invalid! Enter a positive number: -2.2

Functions to create special matrices, Functions to create special matrices:...

Functions to create special matrices: The MATLAB also has various functions which create special matrices. For illustration, the zeros function generates a matrix of all zeros

Function fopen - file function, Function fopen - file function: The pe...

Function fopen - file function: The permission string in the call to the fopen function identifies that the file is opened for writing to it. Just as when reading from a file,

Print an imaginary number, Print an imaginary number: To print an imag...

Print an imaginary number: To print an imaginary number, the function disp will show both parts automatically: >> disp(z1)    4.0000 + 2.0000i The function fprint

Algebra, 5 p2+8p+15, 3 p2-3p-18, 12 p...

5 p2+8p+15, 3 p2-3p-18, 12 p2-p-30

Using functions with the vectors and matrices, Using Functions with the Vec...

Using Functions with the Vectors and Matrices: As MATLAB is written to work with the vectors and matrices, the whole vector or matrix can be passed as an argument to the funct

Common form of the switch statement, Common form of the switch statement: ...

Common form of the switch statement: The common form of the switch statement is as shown below:   switch switch_expression   case caseexp1    action1   case cas

Nested if-else statements, Nested IF-ELSE statements: The if-else stat...

Nested IF-ELSE statements: The if-else statement is used to select between the two statements. In order to select from more than two statements, the if-else statements can als

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