What Do Input and Output Mean in Math?
Date: 04/09/2007 at 18:00:57 From: Bailee Subject: input and output? What is the relationship between the input and output on a table? I'm not quite sure what an input or output is. input - the act or process of putting in. output - production of a certain amount.
Date: 04/10/2007 at 09:23:06 From: Doctor Ian Subject: Re: input and output? Hi Bailee, Think of it this way. Suppose you go to the library, and you have the name of a book, and the name of the author. You hand that to the librarian, and she finds the book and gives it to you. In this case, the "inputs" are the name of the book and the name of the author, and the "output" is the book. Does that make sense? In math, we can make up an expression, like 25 + 3*n and we can choose a value that we want to assign to the symbol. That value is the "input". So we can say, let's make n equal to 4. The input is 4, and the output is the value of the expression, when 4 is substituted for the symbol: 4 -> 25 + 3*4 = 25 + 12 = 37 So the input is 4, and the output is 37. We can pick a different input, like 10: 10 -> 25 + 3*10 = 25 + 30 = 55 Now the input is 10, and the output is 55. We can keep track of these in a table, input output ----- ------ 4 37 10 55 So "input" roughly means: a value that we choose. And "output" roughly means: something that depends on the input. Does that help? - Doctor Ian, The Math Forum http://mathforum.org/dr.math/
Date: 04/10/2007 at 19:52:07 From: Bailee Subject: Thank you (input and output?) Thank you so much that makes sense now! And it helped me ace my test too!
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994- The Math Forum at NCTM. All rights reserved.