Writing an exponential function given 2 points.

[@alexandralevi8514]

When this teaches you more than your actual teacher.. Thank You!!!!!

[@wod5985]

3 years later and my teacher seems exactly like yours.

[@isaacrocha9056]

4 years later in remote learning and this is still true

[@cookiemonsturrrr]

This guys ends the video with "it's complicated"

[@Ryantheman2023]

😂😂😂

[@isaachaskins3463]

Yeah it is🤣

[@MatthewWilde-uc7rm]

Shout out to this homie for allowing me to pass my final

[@saeemasaifuddin]

LOL... you are an epic teacher. Reminds me of a football coach that used to be my geography teacher. Straightforward and awesome at splitting up the steps clearly. Thank you!

[@8Lightningbolt8]

Great video! Like your confidence and clear instructions, understood immediately what I needed to do within seconds. Thanks so much!

[@1ex1uger-prank-calls]

I don't know where you got '2/3 times 5' from, but this video was very valuable because you explained that "a fraction times a whole number puts the whole number in the numerator of the fraction."

[@demoskritusviltriktlorpse5819]

The 2/3 times 5 was just an example he was giving. It was not related to the problem.

[@williamanderson6600]

I feel like my teacher does not teach me the way to do things just so I have to suffer. U r a life saver.

[@nobeyf7]

thank you! this really helped me, i was stuck on a problem similar to this. i just worked my problem along with this video and got the answer right ( :

[@loverdose5474]

it took my teacher forty five minutes to explain this and i didn’t even get it. this man explains it in five minutes and now i understand. thanks bro you’re a real g

[@nooriqbal285]

Very well explained slowly with each step clearly shown...awesome

[@Timounyo34]

I somehow never learned this at all in high school. This was extremely helpful. Thanks for being clear!

[@toshirohjjz]

Thanks for the help I looked it up for more than two hours and you finally explained to me. Thank you!

[@sfk1640]

I love you. We have been working on this for months and it took you five minutes to explain it to me. This has helped me so much. Thank you. I am over whelmed with emotion.

[@evansnowman9650]

I can not thank you enough, my teacher is not the greatest and this has helped me SOOO much for my test. Thanks a ton!

[@RaunchyRomanian]

Or you can do the much more SIMPLE way: (3,4) (2,2) 4=ab^3 /2=ab^2 = 2=b (remember, b^3/b^2= b^1= b AND a cancels out AND 4/2=2). Plug b back into one of the equations to find a: 2=a(2)^2 2=4a a=1/2 Yay, you have your equation: y=1/2(2)^x No use in doing his method.

[@mindifihitthatyeet1465]

salty

[@worsethanjoerogan8061]

His method is much better for beginning students because he's solving it using simpler algebra rather than using a system of equations which is a more advanced concept.

[@maymayy1208]

It's better for beginners, or ones that can't do with all the equations

[@ilovedoebie6132]

Andrew your explanation was helpful, but I agree, his method is better for beginners.

[@imsocoolthatudied]

This was extremely helpful as I have a test tomorrow worth 5% of my final mark and I had no idea how to do this, which would not have been good at all, haha. Thank you!

[@pharaohsoftheeast2204]

Xxxxxxhan lmao

[@vakyodai]

Killua taking da math test

[@alisonhamilton8055]

Thank you so much! This video really cleared up a lot of the confusion I had about these types of problems :)

[@juliaketelhut7816]

you are a life saver. thank you for the easy to follow and clear help

[@kevingarner7231]

Nice

[@madkandi]

"It's Complicated!"

[@deathmatcher69]

oml thank u so much

[@dolnop6824]

I love that tiny finger pointer XD also thanks so much I really needed this

[@BluDrop5]

His finger pointer is so cute!

[@pipsdontlie3031]

Thank you. This video was very helpful.

[@420hp]

There is a quicker way to do this which is making a table and figuring out the common ratio first, but this helped a lot. Great work.

[@gemab.110]

Because the points are actually consecutive, you could find b by dividing the two consecutive y-values, and then using one of the points to solve for a. Much easier, but all the roads lead to Rome.

[@kickbackprogrammer2253]

To make these problems even easier. Is set up the same way he did: 2 = a * b^2 and 4=a*b^3. But divide instead of doing the long steps. By putting the larger number on top ( 4=a*b^3) / 2=a*b^2. You can do simple division to find B is 2! 4/2 = 2 The a's cancel subtract the exponents and boom. You find 2=b^1 or just 2=B. Plug into the simplest equation and solve for a. =)

[@TheMizpah2000]

4=2b or not 2b

[@Nieveria]

-divide it by 2 :^)-

[@Mapledreamlife]

Great video. Great style.

[@haydenthewolf1999]

This helped so much. This semester we were doing nothing but this and I couldn't understand any of it.

[@UltimateFifaMaster]

Thank you sooooooooooo much, this gonna help me 4 my math quiz tmw! thaaaaaaaaank you i appriciate it, it would be great if you made more videos breaking down issues like this. Again than you very much!

[@collinbushee4096]

I have a test tomorrow and you helped soon much!

[@rosanasanchez-zorrilla554]

THIS WAS WAY EASIER TO DO THANK YOU SO MUCH

[@NN-jf7vl]

Holy fucking shit your a genius and damn I suck at math. Thank you

[@PerlesAnales]

you are a fucking legend mate

[@user-fw5yy5ct7v]

God bless you good sir

[@Since200BCE]

it can also be simplified as y = 2^(x - 1)

[@Jay_Script]

I took a test and this was the last question, I saw this and finally am complaining cause I did the first step right but not the rest. Thank you

[@nicolesien2974]

You sir, are a lifesaver

[@12shay190]

this was such a great explanation!!!!!

[@rowansaini1370]

Thanks so much!

[@michaelnishiguchi3176]

This was a really good video, thanks!

[@notronic0780]

Great video

[@yeny7194]

my points are (-2,0) and (0,-3), when I divided by b^-2, they cancelled out so . i had no b when I solved for a. not sure where to go from there

[@yoshy5651]

Did you do it?

[@jackamanning]

This man is a legend

[@seanb5271]

Thanks so much - Very helpful. I was able to solve my questions with your help.

[@jjay11a]

wow!!!! MINDFREEEEEAK

[@vinayakb5739]

Very helpful!

[@zacksargent]

Wow! It's not that bad when you have a competent teacher.

[@themcarrow3216]

Currently taking an online corona test lmao

[@alexissills438]

THANK YOU SO MUCH!!! ITS ALL CLEAR NOW.

[@bniceinc.9085]

Thank you so much! You are actually awesome!!

[@Ion3353]

Thank you!!!! Terrific work

[@isaachaskins3463]

Bro thank you for explaining it so well.

[@Khadeeen]

This is really helpful, thank you man 🙏

[@IvanMTG1]

This was great, thank you!

[@nc4397]

Thank you

[@maymayy1208]

Our teacher didn't even show us how to do this without those yellow and black high tech, calculators from school, so restoration to this.

[@Antweezy]

wow we weren't even given an equation. this was just on the online homework. thank you

[@nganthony8646]

Thank you sir!

[@zahidyaka]

Calc teacher making us relearn everything so here I am...

[@victoriaallen4655]

This is explained very clearly. Now onto my homework. Hopefully I can put two and two together.

[@UjvalaVemuruTheHappiestUnicorn]

This was amazing, thank you so much- however what do you do if you knew that a vertical translation was involved? Thank you so much this helped a lot!

[@adamb7194]

Mr. Wahl: starts off the video with "this is the longest problem in terms of numbers we will do all year" me: o shit

[@jesuisravi]

nice job

[@gabrielamurillo6444]

This helped so much! Thank you

[@Gearsroll]

Thank you so dang much!

[@around2494]

THIS WAS SO HELPFUL!

[@peterscola7848]

Thank you for savin my ass on a test tomorrow🐐

[@dashkajulien6061]

you could of done this much faster, with less work. you have two points so you could of made a graph to find the common ratio=b and count backwards from the 2 points to get your y-intercept=a. you would get f(x)=1/2*2^x

[@user-go3lq9ng9c]

Yes thank you!

[@jacquelinelapp9023]

so I got to the point 3:40 in the video and for my problem, I am left with 5=7/b^3... how do I proceed from there?

[@themrmoneybags1]

or can't you also just solve for "a" for each equation you wrote, then make the a's sequel to each other and then cross multiply and solve/simplify? i did it that way and the way u showed us and i got the same answer.

[@sanjith_sambath]

"ITS COMPLICATED" - Charles Wahl 2012

[@Mooksie]

Amazing, didn't understnad before but I get it now!

[@WaffleCoptorz14]

Thanks, really helped

[@chrisyork4525]

Thanks

[@pinto_8261]

This actually helped thank you very much

[@Jane-so9in]

one question, i tried this method when one of my Y values were a fraction( I'm working with exponential decay) and I tried it, but i came up with a completely wrong answer. Could you give an example for that?

[@user-lt2fv3zp7d]

GOD BLESS

[@sambrown8580]

I got b^1.38=11, and you didn't explain all the scenarios like that where it doesn't just work out perfectly when you divide b^x by b^y and x is not exactly 1 more than y

[@ComandaKronikk]

Thanks heaps brudda v clear explanation hopefully i can drill it into my brain! lolol not literally ov course fam but yeh will practice hard for dat result

[@thuzyle880]

thank you so much~!!

[@minomonster0587]

What about when it is like 8b^2/b^2

[@brycebeck7441]

Thank you so much

[@catliest8364]

thank you i was stuck!

[@21CenturyBreakdownX]

when you're a senior engineering student and you have to hit the math demo's on youtube cuz u forgot basic math, yikes.

[@jadakat6365]

Steve basic😳

[@Ali-AbbassR]

thanks for the hep!

[@mrswish1527]

🙏🙏🙏🙏🙏THANK U

[@Okami-Chann]

You're a god, thanks!

[@jossygarcia6402]

3:15 its confusing cuz you point at the fraction talkin about a whole number then you point at the whole number talking about a fraction like huh??

[@RIDDICKOFONE]

thank you f(x)=Ca^2 is y=ab^x yes!!!

[@willdabeast567]

2b, or, not 2b? That is the question.

[@martadyjak6250]

thank you!!

[@trevorrichards8208]

Why cant my teacher explain it like this lmao

[@belenromero9047]

I got this but almost at 3:40 i starte to get confused withe everything but thanks!

[@add859tankionline]

I am so stuck. I want to calculate the points (44,12) and (60,0). and when I try and calculate b I get 0=12b^16 and that makes no sence. please someone help!!

[@elhermanomayor34]

thank you

[@dylanmcbean3917]

THANKYOU

[@maxjones7929]

thankyou!