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 A inputs a real number, subtracts 100, then outputs the square root of the result if it is real.

 B inputs a date, then outputs the name of a person born on that date.

 C inputs a real number x, then outputs a real number y that is less than 1/1000 larger than x

 D inputs a real number x, then outputs the result of the calculation x^2-1/(x-1)(x+1).

 E inputs a real number x, then a coin is flipped. If the coin flips heads, the output is x+2. If the coin flips tails, the output is x+3.

 F inputs a person, then outputs their birth date.

 

Which of these are functions. If there are more than one then seperate them by commas like B, C, D.

 

Thank You!!!

 Mar 7, 2022
 #1
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In a function, every input must have exactly 1 output. For example,f(x) = x + 1 is a function, because every value of x has exactly 1 value of y. Using this, you can find which ones qualify. 

 Mar 7, 2022
 #2
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The functions are A, D, F

 Mar 8, 2022

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