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Question statement

MATLAB: creating variables and expression basics

In MATLAB, you can create variables (names for the values) like this: x = 6.
Now the variable can be used in calculations, for example, y = sin(x).

This is how you write some basic maths in MATLAB.

Note the parenthesis around function arguments in MATLAB – you can't skip them.

Task:
Create three variables $a = \var{a}$ , $b = \var{b}$ , $c = \var{c}$ and calculate the result of the following expressions using MATLAB.

Mathematical expression	MATLAB
$a\cdot b$	`a*b`
$\frac{a}{b}$	`a/b`
$a^b$	`a^b`
$e^a$ ( $e$ here is Euler number)	`exp(a)`
$\sin a$	`sin(a)`
$\ln a = \log_e a$ (Natural logarithm)	`log(a)`

Give any introductory information the student needs.

			Name	Type	Generated Value

a	integer	7
b	integer	15
c	integer	4
sin_bec	number	819.6292370959
tol	number	0.01
frac	rational	11/2
frac_cos	number	1.5600780218

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
random(-9..9 except 0)

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

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Generated value: `integer`

This variable doesn't seem to be used anywhere.

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This question is used in the following exams:

MATLAB ME410 by Timur Zaripov in Timur's workspace.
MATLAB Intro by Timur Zaripov in Timur's workspace.
ME643-MATLAB Intro by Timur Zaripov in Timur's workspace.

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MATLAB - creating variables and expression basics

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Timur Zaripov 5 years ago

Timur Zaripov 5 years ago

Timur Zaripov 5 years ago

MATLAB: creating variables and expression basics

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Number entry

Advanced settings

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Error

MATLAB - creating variables and expression basics

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Timur Zaripov 5 years ago

Timur Zaripov 5 years ago

Timur Zaripov 5 years ago

MATLAB: creating variables and expression basics

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Number entry

Advanced settings

Generated value: `integer`