Finding the inverse of a rational function

[@jonathanyoe4189]

This guy is incredible...He has helped me with trig and calculus multiple times...He is a better teacher than my own!!

[@brianmclogan]

Jonathan Yoe thank you very much, very happy to be able to help

[@citlalivillegas9298]

same . my calc prof skips a shit load of steps bc he expects us to know.

[@ViiewsPlus]

Facts

[@jamesjeffri9604]

Same here too

[@scottescobedo]

We have to learn this in 8th grade. It sucks

[@brianmclogan]

lets go get it, let me know what else I can do to help you out!

[@osharapatterson8346]

I was wondering if f:x is the same as f(x) and if yes dies it require the same steps as shown in the video?

[@brianmclogan]

happy to help, keep up the hard work!

[@Lavielemm]

I have literally been trying to figure out how to solve a math problem similar to this for two days now. This has been the ONLY video that has helped me figure it out and not made it stressful and confusing. Thank you SO MUCH!

[@yomomomama3964]

The perfect teacher

[@brianmclogan]

YOMOMOMAMA : )

[@prae197]

Omg thank you so much. I had to find the inverse of f(x) = 3x/(x-4) in pre-calc, and I really couldn't figure it out. This made a lot of sense. Very clear instructions, love it.

[@brianmclogan]

+Zachary Mitchell awesome! I am posting new videos and organizing them in playlists this year for Pre-Calc. Feel free to watch as you please PC Unit 1 is the first playlist I have created so far

[@prae197]

I'll have to keep that in mind once we get into heavier stuff. Unfortunately we're still on review, currently on inverses, domain, and range which is something I did a lot of last year. However I didn't have much experience with rational functions, so I was tripped up on how to find its inverse. My teacher said I can just skip it and we'll learn about it later, but math is my passion so I wanted to know anyway, plus knowing how will make it easier once we properly do rational functions, so win-win.

[@brianmclogan]

+Zachary Mitchell That is absolutely correct! Let me know if I can be of any assistance for the rest of the year?

[@yassirerrami8492]

@@brianmclogan ur a legend this helps a lot

[@guevara_w]

did you find it or steal didn't? .-. (the result is f-1(x)=4x/x-3)

[@dareal2669]

3 years later im really thanking you again for this great work may God bless you

[@violapatten710]

My pre-calculus teacher is so confusing, this cleared up a lot of questions I had. Thank you for explaining these problems so clearly!

[@tenishafields1]

You just helped my Daughter who is an online student (Senior Year)!! We love you & thank *GOD* for you!!

[@briann_rt]

11 years Later, this is still more than useful... Incredible job, thank you very much 😍✨

[@brianmclogan]

You are very welcome

[@lunadraws1388]

Inverse functions rationally was so frustrating but now I understand and I hope it gets easier in the near future

[@mikeconner9905]

I remember my High school math teacher telling me that its not his fault that we dont know what we needed to know to be prepared for his class. He said he will teach what he is paid to teach and thats it. I didn’t fault him because it was his choice but i realized then that being a good mathematician dosent make you a good math teacher. B. Mclogan is a great math teacher.

[@afterift]

omg this made functions so much easier now. Thanks!

[@brianmclogan]

+Rishabh Jain you are very welcome! happy to be able to help!

[@bungo7891]

No one was showing complicated examples of inverse rational functions thank you!

[@tired3869]

You saved my grade thank you!

[@ayeeebae653]

i’m literally a freshman in college in precalc because im a complete dumbass in math and youre literally the only person that actually explains everything well omg

[@nadermunye4879]

Damn I didn’t know being in precalc freshman year is considered being a dumbass, isn’t that where almost everyone starts ?

[@QueefSniffer]

@@nadermunye4879 yes 😂

[@richiewitkowski7142]

Thanks man! an explanation rather than just watching someone doing it and having to figure out on your own what they are doing right

[@czaplick7801]

So helpful, you're easy to follow and I found exactly what I was looking for. Thanks a lot!

[@brianmclogan]

you are very welcome!

[@mcmagdiel3277]

This is so helpful very good teaching almost every algebra teacher I’ve had in high school was lazy and didn’t fully teach a concept which leaves blanks in my knowledge.

[@Elizafys]

this video was 11 years ago and is still helping today wow THANK UUUUU

[@sifatsingh7172]

real education. love from INDIA 🇮🇳

[@muhammadshaheer2930]

I have my mathematics exam this coming Monday and the syllabus is way too much. I really needed help in finding the inverse of a function and your video helped me a lot! Thank you so much ❤️

[@brianmclogan]

happy to help! let me know how I can help you further

[@brianmclogan]

thank you, glad I can help

[@Awre]

You are such a great teacher! Your students are so lucky

[@noahtucker8491]

you're a much better teacher than the my actual precalc teacher... thank you! :-)

[@brianmclogan]

You are very welcome!!

[@redmercurygaming7911]

Funny how this man just saved my life almost 10 years after posting this lol

[@gisselle3367]

Hi Brian, I luv ur videos but i am confused on the factoring y part at 2:50 :( where did the other y go and why is there a 1?

[@Lanestadiumlegends]

Thanks for all these videos! Helping me big time with Pre-Cal!! My teacher is French and sometimes I just can't understand her! Wish you were my teacher!

[@outcastjedi4444]

I had to do a test and the last question had me match the steps in the correct order and I forgotten how to solve for the inverse function. The lesson I was given did not give good examples or at least a good one to provide me a guideline. This helped me out a lot!

[@rixku3358]

I love how you do teach the math. It makes it seem beautiful to learn.... What I mean is that my brain does a flip and understands things clearly.

[@gelccc]

Omg allow me to shake your hand master, I needed this for one of the questions in my Cal quiz

[@irenesfabricsoftener9477]

Hey! I just want to thank you, you saved me lol. Our exam's at Thursday and my teacher forgot to discuss what to do if there are two x's. Thanks a lot!

[@noahtillier5416]

OMG Thank you so much, my teacher didn't bother explaining this to us and I had no idea what to do. This has helped so much

[@JohnMaksuta]

This is great. Thanks, was literally stuck stepbro.

[@elliotmyers9074]

Thank you sir. I was hung up on the part where you factored and it made perfect sense watching your video. Keep em coming, cheers!

[@leiaxy5794]

I just literally could solve my exercise with this! Thank you so much! You make it so much easier!

[@nosibaelmuktar4349]

Thank you for the amazing and simple explanation. I’ve been going out of my mind trying to figure inverse functions the whole day. This really helped me. 👍🏼

[@brianmclogan]

you are very welcome Nosiba!!

[@esolbenjamin3645]

Thankyou Brian McLogan for your brilliant explanations about such Math, that help some of us a lot.

[@adrianbarticulo5305]

thank you very much for your video it really helps to answer my homework. Your explanation is clearer than my prof

[@TheCompanyVideoLog]

Thank you so much for this. I have been trying to figure out how to do this all day and I was missing a step but you cleared it up. Keep up the good work!

[@brianmclogan]

+John Rodriguez great to hear, happy to still make more and more videos!

[@ianwyatt5907]

I have never been schooled so effectively 👌👌

[@itsmefreddy8146]

2024 and bro still helps out, immense appreciation to you sir

[@zohranoori4334]

Wonderful you make my life easier i like the way you solve the problem. Thank you so much .

[@lexibarksdale6695]

Thank you sooo much for this video!! It finally clicked!

i wouldn't have ever believed this could be so clear :) thanks!!

[@sneaksneak6522]

Brian thank you for sharing this

[@roikatomwete8312]

Very challenging, love the teaching here.

[@danielmaster8776]

Changing it from xy-y to y(x-1)? I never would have thought of that!

[@brianmclogan]

game changer : )

[@amintafreshi799]

how does this work??

[@danielmaster8776]

@@amintafreshi799 It's actually simple factoring. xy and -y have a common factor of y. So you take the y out of both of them, put it outside the parentheses, and what you have left is x-1. xy became x, and -y became -1.

[@penelopechow6344]

this is so simple and yet it’s confused me for like ten years tysm lol

[@ConservativeHippie001]

Thank you! I forgot to factor. So glad you mentioned that part.

[@tramnguyen0000]

saved my life. thank you very much

[@bodhisattva2348]

Makin my life easier. 😇🙏🏽

[@milansharma1311]

Fantastic step by step instructions! Thank you very much!

[@brianmclogan]

you are very welcome! happy to help

[@furiousrantz5599]

Highly appreciate this video, used it to figure out the inverse of g(x) = x+28/x-7.

[@brianmclogan]

Yes!!

[@Egg-pn3ym]

THANK YOU THANK YOU THANK YOU SO MUCH MAN YOU ARE LITERALLY GETTING ME THROUGH PRE CALC IM GONNA ACE THIS TEST AND ITS ALL BECAUSE OF YOU I CANNOT PUT MY GRATITUDE INTO WORDS

[@nathansalvatore7492]

Excellent video Brian!!!! I was stuck on that last confusing part, however your strength and dignity helped me power through xo!

[@ibrahimjaved2650]

watching all of this guys videos a day before a test loooooool

[@Agnath-]

Thanks for explaining it really well, this help me solve my problems.

[@brianmclogan]

great! Let me know how else I can help you?

[@wawi8588]

Thank you so much sir! Your channel is a blessing

[@ableballon8]

Thank you so much, Brian!

[@funonlyepisode3425]

i love you sooo much i swearr im watching in 2018 dont know if your alive or not but thank you sooo much this saved my life

[@brianmclogan]

hahaha I am here, still making videos

[@hakimahbintimohdyahaya3406]

A BIG THANKS TO YOU, SIR !!!

[@cutthroat399]

You just saved my life today.

[@brianmclogan]

Happy to help

[@kerryannejohn5443]

Hi Brian thanks so much for always helping.. my question is once we get to @1:40 in the video... can we just divide by x then add 4 so that our equation becomes y=(y+2)/x +4??

[@poluefemus]

OH, i was so confused in class because my teacher didnt show the parenthesis around the y-# part so i was so confused when another x term popped up out of nowhere

[@nicoleraheem1195]

This helped alot. Thanks.

[@shanealcairo1096]

i get it now!! thank you so much for this!!!

[@hassanmohammed749]

Thank you teacher

[@lorenzycodo697]

so helpful!! thank you

[@nilafrost8127]

i just got an A on my test thank to you. GOAT. thank youuu

[@jasonguo1586]

this dude is amazing! cant thank you enough

[@SuperEH2393]

great example! Word of advice: you should always provide multiple examples as well for us to do it definitely helps to be able to practice more problems. Thank you Sir!

[@SuperEH2393]

@@brianmclogan I meant more practice problems of finding the inverse. Thanks

[@brianmclogan]

yes on that link is a playlist of multiple examples

[@boneandcobblestone]

Thank you so much! So clear now.

[@Jon-hd4qu]

i was absetn in class when this was taught no one could explain. thank you

[@jamesmcmillian6813]

Thanks that's easier to understand now

[@brianmclogan]

awesome!

[@doctorines3970]

Really that helps a lot thnx simple ne easy

[@cugsly]

Thank you! I love you!

[@soonpeiyun4660]

Thank you sir!!

[@nikkieasley6204]

Thanks for this video 🙏 it’s helped immensely

[@iaminsanity6963]

Thank you so much

[@jt2k415]

Just wanted to say you’re the real MVP

[@limitless4964]

haha thank you sir!!!! i have got the same question with same numbers and signs in my assignment. thankkkkk youuuuuu sirrrrrrrrrrrr

[@rosariacauende3181]

THANK YOU SO MUCH ♥️

[@superdoggopuggowuggo1273]

Thank you so much for your help sir; now I am able to understand these kinds of problems :)

[@particleonazock2246]

Better than Khan Academy!

[@saeidhosseini6292]

He is the best

[@Karlakarz]

Thank you Mr. Mclogan, now i can not fail my math test tomorrow

[@josh2337]

Thank you very much! Was very helpful

[@brianmclogan]

you are very welcome! happy to be able to help

[@AhummerD]

Just what I needed. Thanks!

[@brianmclogan]

you are very welcome!

[@christinac4472]

he made this so simple wow thank you

[@brianmclogan]

you are very welcome!

[@alexd8378]

Could you then do a vid on how to domain restrict this and find the domain of the original and inverse’s domain

[@meganrezac7020]

Thank you so much!!! This makes so much sense now lol

[@janellebuckley3478]

okay i have a question what g of x would go with this in this formula g(x)=cx-d fill in c and d to match the inverse you solved

[@nicolelee6946]

Thank youuu!

[@pacnick11]

This was EXACTLY what I was looking for: An inverse of a function with the SAME variable in both the numerator and denominator. I was sitting here for like an hour trying it...

[@brianmclogan]

perfect! happy to be able to help

[@christianandino8597]

thanks again

[@azaeldtl7194]

Great video

[@georgebrand9325]

You are a great man

[@brianmclogan]

happy to be able to help