dawso
needmorecustomstatusspace
- Joined
- Feb 25, 2004
- Messages
- 1,029
- Gender
- Male
- HSC
- 2005
gday all, got this form last year's independant trial, although i think it may hav abeen a bit that my skool added, anyway, it says
question 6
c)
i) given a function y = f(x), under what geometrical conditions would f(x) = f ^-1 (x) (function equals the inverse function)
ii) give an example for which f(x) = f^-1 (x)
this is a weird question they are worth 2 and 1 marks respectively so wat would u say.....
cheers
-dawso
(btw - i just said its when the lines are a reflection about the line y=x and both pass the vertical line test (geometrical way of sayin they are one-to-one....) and then an example would be as easy as y=x....)
can anyone think of any other conditons that would need 2 be included here?
question 6
c)
i) given a function y = f(x), under what geometrical conditions would f(x) = f ^-1 (x) (function equals the inverse function)
ii) give an example for which f(x) = f^-1 (x)
this is a weird question they are worth 2 and 1 marks respectively so wat would u say.....
cheers
-dawso
(btw - i just said its when the lines are a reflection about the line y=x and both pass the vertical line test (geometrical way of sayin they are one-to-one....) and then an example would be as easy as y=x....)
can anyone think of any other conditons that would need 2 be included here?
