Answer:
test whether a user entered a value
Answer:

Explanation:
In MATLAB, the following command:

Performs the element by elemet division of A and B. This comand is called Right-array division.
So, in your case, we could divide A by B element by element, only using fully-vectorised code (ie. no loops), with the following code:
;
C would be the element by element division of A and B, with no loops.
Answer:
In manual testing, a human performs the tests step by step, without test scripts. In automated testing, tests are executed without human assistance, oftentimes via test automation frameworks, along with other tools and software.
Explanation: