What's the function?

How many functions can you think of that take 2 to 8?

Approaches

What does "take to" mean?

respond:If input value is 2, output value is 8. Or f(2) = 8.

f(x) = x + 6

f(x) = 4x

f(x) = 8

f(x) = 16/x

f(x) = 2x^2

f(x) = 2(x + 1) + 2

f(v) = 8cos((pi)v)

f(x) = 2^(x + 1)

How are these alike? How are their graphs alike?

Your experience

Have you used this problem with a class and seen approaches other than(or more specific than) those mentioned above? Or do you have other comments or criticisms or stories? If so, please tell us!

Last updated 30 November, 2004