so did i work it out right or is it the same as the domain because you can't have -ve logs
the domain of f is given as x<2, x e R, which means that ( 4 - 2x ) will always be greater than 0, thus the ln of (4 - 2x ) will go from - infinity to infinity ... this will be the range of f and also the domain of f-1
the domain of f is given as x<2, x e R, which means that ( 4 - 2x ) will always be greater than 0, thus the ln of (4 - 2x ) will go from - infinity to infinity ... this will be the range of f and also the domain of f-1
but how does it work?
if i put a number slightly less than 2 in i'll get ln(????)=almost 0
the further i go down the number scale ln(????????) gets bigger
so how can i get a -infinity out of this? there is no real number i can think of which will allow me to get -infinity out of ln(4-2x)