Explanation: The input arguments to the feval command cannot be given within [], it should be included within parentheses. Hence, an error will be returned. If the input was within parentheses, the output would’ve been 123 only.

Explanation: The input string argument to the feval command should contain only 1 command. If we give multiple commands to be evaluated, it will give an error.

Explanation: The eval command can evaluate multiple commands at the same time and show their answer but it cannot assign to variables.

Explanation: The input argument to the feval command is given within parentheses. Hence, MATLAB will return an error if we use [].

Explanation: The input argument to the evalc command is given within parentheses. Hence, MATLAB will return an error if we use {}.

Output: 123

Explanation: There is an error in the following code. It would’ve simply evaluated the laplace transform of t which is 1/s2 but t is not defined as symbolic. Hence, MATLAB will return an error.

Explanation: The diary command gets disabled when we try to use the evalc command in MATLAB. The commands sin and round work just fine while Inf is not a function.

Explanation: The purpose of both the commands is simply to make the commands, provided in the input argument, work. They do not hamper the precision with which the commands evaluate a value.