Verifying inverse functions by composition | Mathematics III | High School Math | Khan Academy

Sal composes f(x)=(x+7)³-1 and g(x)=∛(x+1)-7, and finds that f(g(x))=g(f(x))=x, which means the functions are inverses!
Watch the next lesson: www.khanacadem...
Missed the previous lesson? www.khanacadem...
High School Math on Khan Academy: Did you realize that the word "algebra" comes from Arabic (just like "algorithm" and "al jazeera" and "Aladdin")? And what is so great about algebra anyway? This tutorial doesn't explore algebra so much as it introduces the history and ideas that underpin it.
About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere. We believe learners of all ages should have unlimited access to free educational content they can master at their own pace. We use intelligent software, deep data analytics and intuitive user interfaces to help students and teachers around the world. Our resources cover preschool through early college education, including math, biology, chemistry, physics, economics, finance, history, grammar and more. We offer free personalized SAT test prep in partnership with the test developer, the College Board. Khan Academy has been translated into dozens of languages, and 100 million people use our platform worldwide every year. For more information, visit www.khanacademy.org, join us on Facebook or follow us on Twitter at @khanacademy. And remember, you can learn anything.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s High School Math channel: / channel
Subscribe to Khan Academy: www.youtube.co...

[@nikosvideos9335]

This guy has been my math teacher since 8th grade tbh

[@iwalkmygoose7732]

thats what im saying i understand these vids better then school

[@Towl35]

thanks bruh... I majored in math and minored in chem and physics in college (never degreed) then got a job as a business manager at an elem school. this has renewed my love for mathematics and has me relearning old tricks... old dog... old tricks! keep em coming!!!

[@jillian2414]

Thanks I really needed this video🙏😚 I have a math exam tomorrow and this was very helpful 👌

[@samueljaussi6970]

Thank you! Awesome presentation. Very plainly put. Well done.

[@princebooc7143]

what the f i understand this guys presentation for 6:40 only and did my assignment better than reading reading my notes and my math book for two days THANK Khan Academy!!!

[@marianrodarterivera1282]

thankss

[@BeYourself24x7]

thank you

[@person3070]

I got it right! Hopefully I do well on my math test

[@-negative-3889]

Thx

[@hobiesmells4840]

Im watching this on the bust to the exam

[@morganlee4423]

Hobie Lover i’m watching this five minutes before my exam lolll

[@dilshanthennakoon8724]

✌✌

[@zein_caballero]

M-ENTAL A-BUSE T-O H-UMAN

[@abdusalammoslim3776]

xxx ,