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# Logarithms watch

1. Prove that (1/logx(xy^2))+(1/logy(xy^2))+(1/log2(xy^z))=1
2. (Original post by cathedra x)
Prove that (1/logx(xy^2))+(1/logy(xy^2))+(1/log2(xy^z))=1
Have you typed that correctly, should there be a z, can you use more brackets with the logs as well it isn't as clear as it could be.
3. Sorry I couldn't type it clearly enough. I'm struggling to type it as it should be. It's supposed to be the expression 1 "divided by log of (xy^2)-not (xy)^2- to the base x" plus the expression "1 divided by log of (xy^2)" plus the expression "1 divided by log of (xy^z) to the base 2". Prove that this is equal to 1. And yes, there is a z. By the way, thanks for your reply and for your patience.
4. (Original post by cathedra x)
Sorry I couldn't type it clearly enough. I'm struggling to type it as it should be. It's supposed to be the expression 1 "divided by log of (xy^2)-not (xy)^2- to the base x" plus the expression "1 divided by log of (xy^2)" plus the expression "1 divided by log of (xy^z) to the base 2". Prove that this is equal to 1. And yes, there is a z. By the way, thanks for your reply and for your patience.
So is this what you mean?
?
5. (Original post by cathedra x)
Sorry I couldn't type it clearly enough. I'm struggling to type it as it should be. It's supposed to be the expression 1 "divided by log of (xy^2)-not (xy)^2- to the base x" plus the expression "1 divided by log of (xy^2)" plus the expression "1 divided by log of (xy^z) to the base 2". Prove that this is equal to 1. And yes, there is a z. By the way, thanks for your reply and for your patience.
Any chance of a picture? Might make it a bit clearer, I'm still struggling to understand the question
6. Yes, thank you. That's the equation
7. (Original post by an_atheist)
Any chance of a picture? Might make it a bit clearer, I'm still struggling to understand the question
Sorry, the question doesn't come with a picture or diagram.
8. (Original post by B_9710)
So is this what you mean?
?
Pretty sure this isn't an identity; either there's a mistake or details about the values of are missing.
9. (Original post by IrrationalRoot)
Pretty sure this isn't an identity; either there's a mistake or details about the values of are missing.
Same thoughts here.
10. OK, thanks. I'll check the question again and get back to all of you.
11. i think that the third base should be z not 2
12. (Original post by the bear)
i think that the third base should be z not 2
The problem works if you replace the 2 with a y and the z with a 2.

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