MATLAB Script and Function Creation 5

Question 1

What is the correct way to call a function stored in a function handle `fh` with argument `3`?

Accepted Answer

fh(3)

Answer

A function handle is called using standard parenthesis syntax, just like a regular function call.

Question 2

Which MATLAB command adds a folder to the search path so functions in it can be found?

Accepted Answer

addpath('folderName')

Answer

`addpath` appends or prepends a directory to MATLAB's search path at runtime.

Question 3

In MATLAB, what is the output of `class(@sin)`?

Accepted Answer

'function_handle'

Answer

`@sin` creates a function handle, and `class()` reports its type as `'function_handle'`.

Question 4

How do you suppress output from a MATLAB statement inside a script or function?

Accepted Answer

End the statement with a semicolon (;)

Answer

A trailing semicolon prevents MATLAB from printing the result of a statement to the command window.

Question 5

What is the purpose of `validateattributes` in a MATLAB function?

Accepted Answer

To check that input arguments satisfy specified class and attribute constraints

Answer

`validateattributes` checks that a variable belongs to the correct class and meets size/value constraints, throwing an error if not.

MATLAB - MATLAB Technical Computing Practice Test