Differences Between MATLAB and MuPAD Syntax

Note

MuPAD^® notebook has been removed. Use MATLAB^® Live Editor instead.

To convert a MuPAD notebook file to a MATLAB live script file, see convertMuPADNotebook. MATLAB live scripts support most MuPAD functionality, although there are some differences. For more information, see Convert MuPAD Notebooks to MATLAB Live Scripts.

There are several differences between MATLAB and MuPAD syntax. Be aware of which interface you are using in order to use the correct syntax:

• Use MATLAB syntax in the MATLAB workspace, except for the functions evalin(symengine,...) and feval(symengine,...), which use MuPAD syntax.

• Use MuPAD syntax only in MuPAD notebooks.

You must define MATLAB variables before using them. However, every expression entered in a MuPAD notebook is assumed to be a combination of symbolic variables unless otherwise defined. This means that you must be especially careful when working in MuPAD notebooks, since fewer of your typos cause syntax errors.

This table lists common tasks, meaning commands or functions, and how they differ in MATLAB and MuPAD syntax.

Common Tasks in MATLAB and MuPAD Syntax

Task	MuPAD Syntax	MATLAB Syntax
Assignment	:=	=
List variables	anames(All, User)	whos
Numerical value of expression	float(expression)	double(expression)
Suppress output	:	;
Enter matrix	matrix([[x11,x12,x13], [x21,x22,x23]])	[x11,x12,x13; x21,x22,x23]
Translate MuPAD set	{a,b,c}	unique([1 2 3])
Auto-completion	Ctrl+space bar	Tab
Equality, inequality comparison	=, <>	==, ~=

The next table lists differences between MATLAB expressions and MuPAD expressions.

MATLAB vs. MuPAD Expressions

MuPAD Expression	MATLAB Expression
infinity	Inf
PI	pi
I	i
undefined	NaN
trunc	fix
arcsin, arccos etc.	asin, acos etc.
numeric::int	vpaintegral
normal	simplifyFraction
besselJ, besselY, besselI, besselK	besselj, bessely, besseli, besselk
lambertW	lambertw
Si, Ci	sinint, cosint
EULER	eulergamma
conjugate	conj
CATALAN	catalan
TRUE, FALSE	symtrue, symfalse

The MuPAD definition of exponential integral differs from the Symbolic Math Toolbox™ counterpart.

	Symbolic Math Toolbox Definition	MuPAD Definition
Exponential integral	Symbolic Math Toolbox provides two functions to calculate exponential integrals: expint(x) and ei(x). The definitions of these two functions are described below. $$\text{expint}(x)={\displaystyle \underset{x}{\overset{\infty }{\int }}\frac{e^{-t}}{t}dt}\text{.}$$ $$\text{expint(}n,x\text{) = }{\displaystyle \underset{1}{\overset{\infty }{\int }}\frac{e^{-xt}}{t^n}dt.}$$ $$\text{ei}\left(x\right)={\displaystyle \underset{-\infty }{\overset{x}{\int }}\frac{e^t}{t}}dt.$$	$$\text{Ei}(x)={\displaystyle \underset{-\infty }{\overset{x}{\int }}\frac{e^t}{t}}dt.$$ $$\text{Ei}(n,x)={\displaystyle \underset{1}{\overset{\infty }{\int }}\frac{e^{-xt}}{t^n}dt}.$$ The definitions of Ei extend to the complex plane, with a branch cut along the negative real axis.