function output = calculateFactorial(N)
if (length(N) = N < 1 || N > 1)
output = 'Error; N must be a single number and not an array';
output = 'Error; N must be greater than Zero';
output = 'Error; Intger must be whole number';
struggling with these functions. If i ommit line 2, theres then a mistake on line 3 where there is an incoorrect use of '='. I need help wrapping my head around my mistakes.