MATLAB Basic Introduction 5

Question 1

Which MATLAB function is used to find the maximum value in a vector?

Accepted Answer

max(v)

Answer

max(v) returns the largest element in vector v, and can also return its index as a second output.

Question 2

What does the command 'format long' change in MATLAB?

Accepted Answer

Displays more decimal digits in numeric output

Answer

format long switches display to 15 significant digits instead of MATLAB's default 4-digit short format.

Question 3

How do you transpose a matrix A in MATLAB?

Accepted Answer

Both transpose(A) and A'

Answer

Both A' (conjugate transpose) and transpose(A) transpose the matrix; for real matrices they produce the same result.

Question 4

What is the output of mod(10, 3) in MATLAB?

Accepted Answer

1

Answer

mod(10,3) returns 1 because 10 = 3×3 + 1, so the remainder is 1.

Question 5

Which file extension is used for MATLAB script files?

Accepted Answer

.m

Answer

MATLAB script and function files use the .m extension, while .mat files store workspace data.

MATLAB - MATLAB Technical Computing Practice Test