Hi I am terrible at proofs. I am going to write 'log base b' as logb. I need to prove the following:
1. logb 1=0
2. logb b=1
3. logb 1/b=-1
4. logb 1/x=-logb x
I realise this may a bit time consuming so thank you in advance. Or if anyone has seen these proofs somewhere? Thanks.
I'm having trouble with the fourth one. I guess I can show the relationships as stated in the link you posted, but, I don't feel like I have proved anything.
For example, with No.3, I just wrote
log b (1/b)=-1 then log 4 (1/4)=-1 because 4^-1=1/4
Thats it, I did the same for the first two but I'm stuck on the fourth. I just don't know if what I have done constitutes a proof?