Using the Change of Base Formula

From Thinkwell's College Algebra
Chapter 6 Exponential and Logarithmic Functions, Subchapter 6.3 Properties of Logarithms

[@MommaAle84]

I really like when they make mistakes, makes me feel normal now and not an idiot that I keep messing up lol

[@kaeleppcohen3210]

No other teacher would actually explain the logic behind a formula. They always just say "here's the formula, plug it in, and you have the answer" and then you have to memorize it. But this guy actually gives you the logic that allows you to reconstruct the formula when you need it so you don't need to memorize it. Amazing.

[@altyaltyalt]

Kael Eppcohen They should give a teacher rating and review system determining their pay to some extent to motivate teachers to actually help students and try for their job. A lot of teachers dont try, but some do.

[@amtrakatsfnyc]

The reason why the logic is not taught is that the exercise of proof has been eliminated from the mathematics curriculum in the USA. After having taught math for 55 years, I have total disgust for the present day curriculum. Let us not forget that EVERY math theorem has a proof and this is necessary to learn if one is to seriously study mathematics.

[@jenniferoviawe]

there was a mistake. Looked and was wondering why he put 17 but while he was writing "17" he said it was twelve. While he was computing it he noted it was 17. Lol that's funny he couldn't read his own writing

[@TroutSniffer69]

Jennifer Oviawe nice catch

[@makhan5773]

WE are all human beings after all, teachers are no exception. The whole idea of this exercise is to understand the basics of how to deal with the Logs of numbers involving bases other than common logarithms.

[@parkysood7865]

dude but he has more experience than the rest of us(maybe...) so he shouldn't have made that mistake

[@jennyleesiewmee7664]

Yes, there was an error, 17 vs 12.

[@sasqarimdiis8482]

Exactly

[@i_am_a_proud_indian]

Thank you sir, your mistake helped me in learning logarithm because you have corrected the wrong number at the last of the video.

[@chynad120]

where did you get 17 from?

[@wordslast1797]

Chyna Delk- Bratcher pretty pic

[@kenzie9097]

chill

[@نوالالجهني-د3ذ]

he did it by accident

[@stefanmelinte3581]

@@نوالالجهني-د3ذ he did it on purpose

[@h_mf-me8hz]

Wow🙂 you are awesome and have that magic that makes me fell it's fun👏🏻👏🏻👏🏻thank youuu sooo muuuuch

[@abdirashiidmohamedrashiida7553]

Teacher why u put 17 while you put 12

[@faithmorehead]

It's great to know log base thank you! Watching in 2017 though I want to caution that updated calculators can do non-log base ten. If you are using a Ti-84 you can hit the maths button and then select a and it will give you "log (base:[blank]) ([blank])". You can input into the first blank your non base ten value and then the number you are taking the log of. I hope I can be of help!

[@shazamohammed4740]

You must put 12 not 17!!

[@roniberg9998]

When you do the first problem, you wrote (and calculated) ln 17 when the problem is ln 12!

[@TroutSniffer69]

Actually you can input a base. Use a comma after you inter the argument. Parentheses may be needed. log(4),(5) Will input log base 5 (4).

[@Jake-re2nt]

GREAT TEACHING M8 got this stuff instantaneously

[@Emmanuella-ik24xo]

Your explanations are always excellent

[@stevematson4808]

I didn't know that Ben Shapiro was also a math teacher.

[@woobinkwon2259]

You should be at 1 million subscriber

[@dreamlanddon]

This teacher explains things by an easy way and displays a keen mind. God bless him so much.

[@chellep6740]

Amen! Glory to God for this stupendous math teacher! 🙏🏻❤️

[@shazamohammed4740]

How log 7power 12 equal 17÷7??

[@anvitamaheshwari2064]

wait wait why did he put 17???

[@brucewayne-ml2fu]

you are a very good teacher

[@jessehayes1265]

bip bip

[@Emmanuella-ik24xo]

Excellent

[@richycline]

Hey man your videos have helped me a lot. You're a good teacher and you're not an overly attractive woman like that Mathbff character. She's obviously great at math too but I can't learn a damned thing from her videos... Thanks ;)

[@cyliachipara5658]

ooh thx for the corection was wondering wer the 17 came from

[@woobinkwon2259]

Please, keep making amazing videos

[@woobinkwon2259]

Also i love your sense of humor

[@Kaipanzer-r2w]

i dnt know what im doing with my life but its what life supposed to be :(

[@skt5215]

How to solve without calculator? My teacher doesn't not allowed to use us one.

[@bellarose1654]

He just makes it more confusing than it actually is.

[@PacificOutspread]

it's great the formula was actually explained

[@eggxecution]

at 6:51 but I thought you said that negative exponents are junk based on your past video?

[@printedphysics6845]

great video sir thank you

[@abkadamsir]

very nice...explaination sir

[@ThePlotThickenz]

Good vid, but the shirt n tie combo needs a lil work

[@chynad120]

lol okay, when I finished the video, I seen where it came from! lol

[@normalyoutubechannel3755]

These are the best math videos on youtube

[@ebenezerghunney5948]

what a mistake. but he has 2 change it

[@joshhenry6126]

Wow very good teacher

[@basilrex4105]

fun way of learning

[@sannahshah6219]

handwriting is good

[@yasota1]

Thank you. Very useful.

[@tomato25]

1:00 there is

[@mayaahmed9756]

thanks alot

[@johngddr5288]

Is this Mr. Berger?

[@md.alamgirhossain783]

fine

[@xhaxhimiti]

Great Lecture

[@elijahhorn7557]

everyone saying he put a 17 instead of 12 didnt finish the video loool

[@ocanchumani]

thank you!

[@JossinJax]

His smile at the end :)

[@cathywilson3551]

shouldn't the first of your conversions been a 12 not 17 ?

[@wowmath2020]

Same observations

[@jackjones728]

Can I be in your fantasy??!?!?!!?!?!?!