Matlab Tutorials

Analysis of Functions, Interpolation, Curve Fitting, Integrals and Differential Equations 2

Localize minima and maxima of functions

Let us try to find the local minima and maxima for the function func(x). The interval of interest is [-6 0]. The algorithms are iterative. There are 2 methods to use. The first one decides x in a given interval, and the second one looks for x around an initial guess. To decide the maxima we are looking for an x that minimizes the negative function: -func(x). Read More

Analysis of Functions, Interpolation, Curve Fitting, Integrals and Differential Equations

In this tutorial we will deal with analysis of functions, interpolation, curve fitting, integrals and differential equations. Firstly, we will need to use polynomials and therefore we have to be familiar with the representation of these. A general polynomial looks like: p(x)=a_nxⁿ + a_n-1x^n-1 +……….+ a₁x + a₀ and is represented by a vector in Matlab:
p=[ aⁿ a^n-1 ....... a¹ a⁰ ] Read More

Controlling Command Window Input and Output

The format Function

The format function controls the numeric format of the values displayed. The function affects only how numbers are displayed, not how MATLAB software computes or saves them. Here are the different formats, together with the resulting output produced from a vector x with components of different magnitudes. Read More

arrayfun

arrayfun – Apply function to each element of array Read More

floor

floor – Round toward negative infinity
Syntax Read More

fix

fix Round towards zero.
fix(X) rounds the elements of X to the nearest integers
towards zero.
Syntax Read More

round

round Round towards nearest integer.
round(X) rounds the elements of X to the nearest integers. Read More