Question

Choose the correct option.

(a) any() shows all the elements in a matrix while all() shows every element of a vector

(b) any() is ‘true’ if elements in a vector is zero

(c) all() is ‘true’ if every element in a vector is non zero

(d) all() is ‘true’ if every element in a vector is 0

The question was posed to me during an online exam.

The origin of the question is Variables and Assignments in chapter MATLAB Basics of MATLAB

Answer 1

Right choice is (c) all() is ‘true’ if every element in a vector is non zero

Easy explanation: ‘any()’ and ‘all()’ are pre-defined functions in MATLAB. The function ‘any()’ returns 1 if every element of the vector, mentioned within the parentheses, is non-zero. The function ‘all()’ returns 1 if any element of the vector is non-zero.