The factorial n! of a positive number (integer) is defmed byn! = n(n-1)(n-2 ). .. 321
Chapter 7, Problem 11(choose chapter or problem)
The factorial n! of a positive number (integer) is defmed byn! = n(n-1)(n-2 ). .. 321, where 0! = 1. Write a user-definedfunction that calculates the factorial n! of a number. For function name andarguments, use y=fact (x), where the input argument x is the numberwhose factorial is to be calculated and the output argument y is the value x! .The function displays an error message if a negative or non-integer number isentered when the function is called. Do not use MATLAB built-in functionfactorial. Use fact with the following numbers:(a) 9! (b) 8.5! (c) 0! (d) -5!
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