Simplifying Expression using Logarithms

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SUMMARY

The forum discussion focuses on simplifying logarithmic expressions using established logarithmic rules. The specific expression discussed is log(2)4 + log(16)1/4 + log(1/4)2 - log(7/4). Participants emphasize the application of logarithmic laws such as log(a) + log(b) = log(ab) and log(a) - log(b) = log(a/b). The final simplified form of the expression is log(4/1.75), correcting earlier miscalculations regarding the values of logarithmic components.

PREREQUISITES
  • Understanding of logarithmic properties, including log(a) + log(b) = log(ab)
  • Familiarity with logarithmic expressions and their simplification
  • Basic algebra skills for manipulating expressions
  • Knowledge of positive and negative indices in exponents
NEXT STEPS
  • Study the laws of logarithms in detail, including log(a^b) = b log(a)
  • Practice simplifying complex logarithmic expressions with various bases
  • Learn about the relationship between logarithms and exponents
  • Explore applications of logarithms in solving exponential equations
USEFUL FOR

Students learning algebra, educators teaching logarithmic concepts, and anyone seeking to improve their skills in simplifying logarithmic expressions.

  • #31
Ok i think i got it now. i got it down to 12 by doing this:

2Logx^2 / 1/3Logx
= 4Logx / 1/3Logx
=4 * 3Logx / Logx
=12Logx / Logx
=12

is all the working out correct? if not can u show me the full question with working, all set out as if it were a test?
 
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  • #32
xX-Cyanide-Xx said:
Ok i think i got it now. i got it down to 12 by doing this:

2Logx^2 / 1/3Logx
= 4Logx / 1/3Logx
=4 * 3Logx / Logx
=12Logx / Logx
=12

is all the working out correct? if not can u show me the full question with working, all set out as if it were a test?
Yes. It is correct.
 
  • #33
cool, but now, back to the first question.

i got up to:
Log(2^4) + Log(16^1/4) + Log(1/4^2)
= Log 16 + Log 4 + Log 0.0625 - Log 1.75
Is this correct?

Then would it go:
Log(16 x 4 x 0.0625) = Log4
= Log(4/1.75)
So y have i got 4/1.75, and jahaddo has 2/1.75??
please help...
 
  • #34
Can someone please help!
why ismy answer 4/1.75 when jahaddo has 2/1.75??

HELP PLEASE!
 
  • #35
16^1/4 = 2, not 4.
 

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