In MATLAB please!!

Write a function $($not a script$)$ that does the following:

$($a$)$ The input to the function is a positive integer n $.$

$($b$)$ The function will determine if the the number is a prime number or not.

$($c$)$ The function returns $"1"$ if the number is prime and $"0"$ if the number is not prime.

$($d$)$ The function should be called isPrimeNum$()$ and exist in a file called isPrimeNum.m$.$ Matlab$/$Oc$-$

tave are case sensitive$.$

$($e$)$ Matlab$/$Ocatve have a built$-$in function called isprime $($n$)$ that does this already. You can't call

that function in your function because that's cheating. You may use the built$-$in gcd function

though. Your function should start out this way.

function y $=$ isPrimeNum$($n$)$

$\%$ This function will compute if a positive integer n is prime.

if n $<mtext></mtext><mn>0</mn>$

disp$(\text{'}$Oops$.$ n should be a positive integer'$)$;

y$=-1$;

return

end

if n ~$=$ floor$($n$)$

disp$(\text{'}$Oops$.$ n should be a positive integer'$)$;

y$=-1$;

return

end

$\%$Your actual code should start below here.

Show results for running the following code

isPrimeNum$(-6)$

isPrimeNum$(3\mathrm{.}21)$

isPrimeNum$(7)$

isPrimeNum$(10)$

isPrimeNum$(77)$

isPrimeNum$(89)$