The unit step function is one of the most important functions in engineering. Although it seems simple, it can be used in a number of creative ways, such as "switching on$"$ functions at a particular time. Create a function M$-$file to compute the step function, which is defined as:

The inputs to the function are $($which can be a scalar or vector$)$ and $($always a scalar$).$ The output is $,$ which is the same size as $.$ Ensure your function can handle both scalar and vector inputs of $.$ You can solve this problem using if$/$for statements $($beginner$)$ or using logical operators $($advanced$).$ To test your code, use the following case $($this is the first test case$)$:

x $=-1$:$0\mathrm{.}01$:$3$;

a $=0$;