+65-85483705

Logarithms

Question

Solve the following questions.

  1. 3x = 25
  2. log3x = 2
  3. log35

 

Answer

  1. x = 1.3979/0.4771 = 2.929
  2. 9
  3. x = 0.69897/0.4771 = 1.465

Note:

  • If you remember the laws of logarithms, you may notice that sometimes logarithms expression can be written in different ways.
  • You may see from below on how the logarithm expression can be simplied (eg. when logorithms with same base be added or subtracted from one another).

The laws of logarithms

  • logam + logan = loga(m * n) = logamn
  • logam – logan = loga(m / n)
  • logamb = b*logam
  • loga1 = 0
  • logaa = 1
  • alogax = x
  • logax = logbx/logba

About the Math Tutor - Dr Loo

I am a PhD holder with 8 years of teaching experience at secondary school and university. My expertizes are mathematics, statistics, econometrics, finance and machine learning.

Currently I do provide consultation and private tuition in Singapore. For those who are looking for math tutor in Singapore or statistics tutor in Singapore, please feel free to contact me at +65-85483705 (SMS/Whatsapp/Telegram).

Some of the math tuition in Singapore I provide includes O-level math tuition and also JC Math Tuition (H1 Math Tuition & H2 Math Tuition). On the other hand, my statistics tuition in Singapore mostly focus on pre-university level until postgraduate level. For those who prefer online tutoring service, the online O-level math tuition and online JC math tuition are also available.

Mathematics & Statistics Tutor in Singapore

For those who are looking for math tution in Singapore

Need help with this topic? I do provide mathematics home tuition in Singapore for O-level math and also JC H2 math. In addition, online math tutoring is available as well. Feel free to contact me if you would like to know further.

O-level Math Tuition Singapore & JC H2 Math Tuition Singapore - Logarithms
Open chat
Contact me