C3 domain

https://07a69ccf283966549a9350d1a66951a7bc96e2dc.googledrive.com/host/0B1ZiqBksUHNYZ0JQM1NRcmdHdXM/January%202014%20(IAL)%20QP%20-%20C3%20Edexcel.pdf

Question 8a. I get that I have to work out the range of the function first in order to get the domain of the inverse.

How would I find the range? I draw it out and the y cooerdinate is (0,1) but range seems to be < 3??

Reply 1

Katiee224

11

Original post by imran_

https://07a69ccf283966549a9350d1a66951a7bc96e2dc.googledrive.com/host/0B1ZiqBksUHNYZ0JQM1NRcmdHdXM/January%202014%20(IAL)%20QP%20-%20C3%20Edexcel.pdf

Question 8a. I get that I have to work out the range of the function first in order to get the domain of the inverse.

How would I find the range? I draw it out and the y cooerdinate is (0,1) but range seems to be < 3??

draw out the f(x) graph and you will see there is an assymptote at y=3, hence the range of f(x) is f(x) < 3

we can then deduce the domain of the inverse function from this

(edited 7 years ago)

Reply 2

imran_

OP

2

Original post by Katiee224

draw out the f(x) graph and you will see there is an assymptote at y=3, hence the range of f(x) is f(x) < 3

we can then deduce the domain of the inverse function from this