Write a value-returning function isVowel that returns the value true if a given character is a vowel and otherwisereturns false.

Answer: Following is the function isVowel written in python:-

def isVowel (check) : #defining isVowel function with parameter check

#following are the nested if else if for checking that check is a vowel or not if yes returning True if not returning False.

if check = = "A" or check = ="a":

return True

elif check = = "E" or check = ="e":

return True

elif check = = "I" or check = ="i":

return True

elif check = = "O" or check = ="o":

return True

elif check = = "U" or check = ="u":

return True

else:

return False

Explanation:

In the function we are checking in each if or elif statement that check is a vowel or not if it is a vowel then returning True if not returning False.