Fancier logarithm expressions | Logarithms | Algebra II | Khan Academy

Examples of logarithms that evaluate to fractional and negative values.

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[rogerdotlee]

BLISTERING FARTBUCKET! After almost FIFTY YEARS I've found someone that can actually explain the difference between x^1/y vs x^-y without leaving me wondering if they were doing this just to taunt me!

Thank you, Mr. Academy, for finally, after all these years, proving to me that Algebra was NOT designed to make me think that the world was out to make me look stupid. I've got a firm grasp on trig, my geometry is passable, and Calculus makes sense. But this is a first for Algebra. Thank you.

[rogerdotlee]

Indeed it is. My biggest problem was always involving powers, fractions of powers, powers of fractions, inverse powers of fractional inversions, and the meteorological inversions that hover over San Francisco all the time.

[GhStSecurity]

dear mr.khan can u add more problems of integral calculus please? as diff. calculus? I love that problems :D make me feel so confident about my skills thank you

[shabbirahmeddar]

Kindly use brighter and bolder highlighter so that writin viewr may better see and comprehended the subject.

[THETHPHANTOM]

Weird, i like math more and more as time goes by, mostly because there is a lot stuff in my line of work that keep me coming to this channel and be amazed and say wow its that easy, after spending hours being useless to my colleagues.

[environ.global]

How can I solve
2x log 5 + log 4 = log 8/25 - log 2
I found -2 as the answer

[PurpleNoodles]

I feel so smart for understanding all of this xD

[projjalm]

I'm starting to enjoy these videos as much Sal does.

[BarunVishwakarma]

Sir ji great "I hope u understand "

[ironmaiden]

you are awesome. I like the way you make it easy for us to understand.thanks a lot

[mehreenayub]

What about the properties which allow you to conclude that log baseaxa=1 or common log10=1 or lne=1

[carlii]

while listening all I'm hearing is Joe Swanson from family guy, hard to concentrate lol

[toutankhamonskiller]

please make a video about the usefulness of logarithms

[yolandamiller]

can this be done in the TI-84 Plus calculator???

[Quizibo]

Hey Mr. Khan. Do some finance videos on Benjamin Graham and analyze his formulas.

[byronjones]

your a great teacher yea I did enjoy this video loads amazing

[Seattle]

Thanks Sal, Been a while since Ive visited, but once again thank you.

[ibrahimhcaglayan]

Try making a graph of a parameter whose values vary between 100, 000 and 0.0001! That is when you need logarithms. Also, you hear in logarithms, you smell in logarithms, your hair and fingernails grow in logarithms, etc etc... Life is based on logarithms!

[davids]

I enjoy all your explanation. Very good!!! Do u explain Primitives also 4 instance?

[purva_vj]

you are so damn awesome.... love your teaching... thnxx sir ;)