Question

Double integration of a function can be done by using the _____ command.

(a) int(int(func))

(b) int(‘int(‘func’)’)

(c) quad(int(func))

(d) cannot be done

I got this question in an interview for job.

The origin of the question is Integration topic in portion Beyond the Basics of MATLAB

Answer 1

Right choice is (a) int(int(func))

For explanation I would say: A function, as an input to the quad() command, should be within a string argument. The int() command cannot take string arguments. Hence, we can use the command int(int(func)) to find the double integral of a function.