MATLAB General MCQ 3

Question 1

In MATLAB, what does the function strcmp(s1, s2) return?

Accepted Answer

1 if strings are equal, 0 otherwise

Answer

strcmp returns logical 1 (true) if s1 and s2 are identical, and logical 0 (false) otherwise.

Question 2

Which MATLAB function converts a numeric value to a string?

Accepted Answer

num2str

Answer

num2str converts a numeric array to a character array (string), with optional format control.

Question 3

What does the MATLAB function isempty(A) return when A = []?

Accepted Answer

1

Answer

isempty returns 1 (true) when the array has any dimension of size zero, such as an empty matrix [].

Question 4

Which statement correctly defines an anonymous function for f(x) = x^2 + 1 in MATLAB?

Accepted Answer

f = @(x) x^2 + 1

Answer

Anonymous functions in MATLAB are created with the @ operator followed by the argument list and expression.

Question 5

What is the result of logical expression (3 > 2) & (5 < 4) in MATLAB?

Accepted Answer

0

Answer

The & operator is element-wise AND; (3>2) is true and (5<4) is false, so true & false = 0.

MATLAB - MATLAB Technical Computing Practice Test