Question

can somebody tell me how to test if a function is onto

Answer 1

onto what? you can use the vertical line test if you're checking for functions

Answer 2

please no sarcasm

Answer 3

I'm not being sarcastic :X

Answer 4

ooh sorry i mean to test if it is an onto function i dont think that many classes cover the topic but mine does

Answer 5

No worries, I'm only trying to help. And yes, my class covered that as well

Answer 6

you mean one to one function correct?

Answer 7

no an onto function has a similar test but i know a one to one function needs to pass VLT and HLT and have unique inputs and outputs so im good on those

Answer 8

Okay. If it's a one-to-one function; then this is what you're going to need to do:
y definition, to determine if a function is ONTO, you need to know information about both set A and B.
When working in the coordinate plane, the sets A and B may both become the Real numbers, stated as .

Answer 9

f : r -----> r

Answer 10

I think this site will help you :)

http://www.regentsprep.org/Regents/math/algtrig/ATP5/OntoFunctions.htm

Answer 11

thanks for the link i needed a good regents prep site

Answer 12

No problem, good luck

Answer 13

thanks :)