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fodog414 fodog414
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10 years ago
I haven't been able to find this in the book yet? Could someone explain the rules for equivalent logarithmic form?  Nerd Face Confounded Face

Rewrite the logarithmic expression log(A+B/B) in equivalent logarithmic form. There may be more than one correct answer.

 A.  log(1)+log(B)-log(A)

 B.  log(B)-log(A)

 C.  log(B)

 D.  log(A+B) - log(A)

 E.  log(1+B/A)

 F. None of the above
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#1
Educator
10 years ago
Not sure... Hmm.
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#2
10 years ago Edited: 10 years ago, metal_zelda

bio_man, log(a+1)=/=log(a)

if a=9, then log(9+1)=1
versus log(9)=.95

fodog414, are you sure the typed the problem and answers with the proper variables and parentheses? I don't see any correct answers as everything is written.
Post Merge: 10 years ago

Oops, I didn't see option F Smiling Face with Open Mouth

Still, I'm curious if this isn't actually log((A+B)/B) which has the form log(A+B)-log(B)
fodog414 Author
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#3
10 years ago
I thought so as well but None of the above is incorrect
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#4
10 years ago Edited: 10 years ago, metal_zelda
Quote from: fodog414 (10 years ago)
I thought so as well but None of the above is incorrect

You wrote it down incorrectly in the opening post, it's log((A+B)/A) not log(a+b/b).

that has the form log(A+B) - log(A) , which is answer D.
fodog414 Author
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#5
10 years ago
Sorry about those parenthesis,

It seems that it cant be just D
or CD
From what i've worked out its log A + log B - log A
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metal_zeldametal_zelda
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#6
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10 years ago Edited: 10 years ago, metal_zelda
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fodog414 Author
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#7
10 years ago Edited: 10 years ago, fodog414
ya I was going over some of the rules, and noticed that error

thank you metal_zelda!  Astonished Face
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