Example Solving Algebraic Equation Using Logarithmic Properties, Logarithms Lesson 13

This video was made in a response to a question I received regarding why we would want to use a certain logarithmic property. This tutorial shows a situation where one would want to use such a property, and demonstrates how to solve it.

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[maxnilsson]

This playlist might just have saved my grade. Thanks man. Not all heroes wear capes

[bluedressable]

My teacher decided that logarithms were not important to teach, and when the EOC Exam came around, about 50% of the questions were on logarithms... By the grace of God, I passed the exam, now that I'm going into college, I am more confident now that I understand these. Thank you so much for making these video series Paul! :)

[spiralanimal]

Went from knowing little to nothing about log to knowing everything, thank you for the lessons

[dilshadjumat]

i finally understand on how to do the logarithms.Thank you so  much, your tutorial is very useful .

[jarrettspence]

This video helped me so
If it wasn't for this video, i wouldn't have known how to do this type of logarithm which i have been struggling with for a while.
Thank you so much.

[savannahmota]

Thank you very much Paul! I have a big math test coming up tomorrow and I was super nervous but now I understand all the concepts! So So So Helpful!

[learnmathtutorials]

The change of base formula is useful whenever you want to check the value of a logarithm on a calculator. Most calculators only come with a log base 10 button (LOG) and a log base e button (LN). The change of base formula lets you calculate any base with either one of these buttons. For further detail on using the change of base formula, please see Lesson 4 of this playlist.

[balikakamble]

thank you sir for all these videos. these are so useful. thank you once again.

[daneildavis]

i do think all 13 vidz are worth it. thanx for the help

[abhishekbhattacharjee]

wow! I effectively know the basics of log, an important part of mathematics ... thanks Paul.

[andrewmamusic]

Really enjoyed your explanation of logs. Thanks so much, Paul!

[needarandomname]

This last video was definitely needed thanks!

[needarandomname]

I see some people are thanking you in Arabic so I'm tempted to say: ありがとうございます！

[smilemile]

In English I say : Thank You
In Arabic I say : Shuk-ran

You Are Awesome :)

[jadebrown]

3 + log2(X) = log2(5)
3 = log2(5) - log2(X)
3 = log2(5/X)
2^3 = 5/X
X = 5/8
I'm sorry but I still don't understand why you wouldn't just do what i have done above.

[tutorialstube]

Hi Paul, this tutorial is excellent. Thank you very much.

I have a question, how to solve this issue?

For this statement to be true, what is the value of n?
log2(n) < n

or : n < (2^n)

[rudygarcia]

i'm stuck on a problem that has pi ^1-8x=e^9x. do you have a video on this type of problem? I would really appreciate it.

Thank you.

Rudy

[BioJam]

how do i expand log with a lower 2 [16x^4(cube root of x-8) over 7(x+15)^4

[AT-hrfw]

Sir, I would really appreciate if u could make a vid on proving an algorithm!! i.e LHS=RHS
for eg: log x/y-z=log y/z-x=log z/x-y, show that xyz=1
Thank you.

[chjethan]

Hi, Can you explain how is it calculated for log(2) without a calculator. On executing this on calculator we get 0.301029996... how can we get this on piece of paper. Thanks in Advance!