I have viewed quite a substantial number of alternative math-aid video materials, and have to admit that you are truly a teacher from God. Clear, laconic (yet plenty of material covered), committed to full coverage of various topics and quite humorous (which has been proven to aid memory retention....and makes math that much more fun). Thank you!!!

@profrobbob

9 жыл бұрын

Alex Leonidovich you're welcome and thanks for taking the time to share your appreciation and for choosing my channel to learn from...BAM!!! Please like, subscribe, support the ads and spread the word to help this channel keep growing and teaching others for free:D

Sir you're really great, i'm blessed to have found a teacher like you.

@profrobbob

5 жыл бұрын

What a nice compliment YK...Please take the time to like, subscribe, support the ads and share this channel with everyone to help us keep growing and helping others!

After looking at 20 highly lacking videos on the topic, I can confidently say you are a phenomenal teacher. Thanks for taking the time to share this.

@profrobbob

5 жыл бұрын

And THANK YOU for not giving up until you found what you needed and for taking the time to share your appreciation with us! Please continue to share this channel with anyone and everyone you can...we won't stop till we have a million subscribers...BAM!!!

THAT HAND WRITING IS SO BEAUTIFUL OMG ;--;

@profrobbob

9 жыл бұрын

Yuli-Hime thank you, I even have a couple lessons for that if you need a break from math:) ...and thanks for choosing, liking, and subbing! We really appreciate the support:)

I so appreciate the instruction. This is very clarifying and beats the crappy WileyPlus program that is insufficient and has very few instructive videos. I have to thank you profusely as my life is bettered because of your time.

@profrobbob

8 жыл бұрын

Once again...I'm so happy to hear that my lessons are helping you so much and thanks for your continued support, positive feedback and viewership!

This is cool. The best part about your channel is how you show us how to do it. Also I like your handwriting!

@profrobbob

6 жыл бұрын

Wow...another comment! I wish all my students studied like you...BAM!!! ....if you need a break from math I also have a few cursive videos you can practice with:)

bless this man he knows what he's doing unlike my math teacher >:D

@profrobbob

5 жыл бұрын

Thanks for seeking outside help and choosing this channel...sounds like the perfect time to subscribe and share this "study resource" and my channel link with your teacher so ALL current and future students like you will know where to find after class help...BAM!!! Please remind everyone how important it is to like, subscribe, share thru social medias and with classmates to help these free educational channels grow and remain free for others like you:D

Professor RobBob ,this is an absolute awesome video/lecture on Graphing Absolute Value Functions with Transformations. Graphing functions using Transformations was not one of my strong points in Algebra, but from analyzing the methods involved, this is not difficult to understand.

I am honored to be your 2 to the 9th power like as you approach 50K views! Great stuff. Clear discussion. Smooth transitions. Even the detail of clarifying the shape did not actually represent a function.

the equation you have on the board at the start of the video is all i need for my notes. thanks!!!

@profrobbob

5 жыл бұрын

BAM!!! ...glad I could help. Please help us by liking, subbing and sharing this free channel with everyone:D

Thank you so much! You are a wonderful teacher!

@profrobbob

8 жыл бұрын

+Mae Huebbe you're welcome and thanks for studying....please take the time to like, sub and share this free channel:D

Now Closed Captioned

for horizontal compressions and stretches, are the functions stretched/compressed by a factor of b or 1/b

profBob you the best!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ahhhhhh!! Finally!!!!!!!!! Thank you!

@profrobbob

8 жыл бұрын

+E Reed you're welcome and thanks for watching and subbing! Spread the word:D

thank you so much! this helped me a ton

@profrobbob

7 жыл бұрын

you're welcome and thanks for the sub!

Prof robbob I always watch your videos because my teacher says I am struggling in absolute value functions.

@profrobbob

6 жыл бұрын

Thanks for watching and please don't forget to subscribe and share this channel with your teacher so they can share it with ALL their students:D

So helpful thank you for this 👍

@profrobbob

3 жыл бұрын

You're welcome...thanks for watching! Please like, sub and share this channel with everyone...BAM!!!

LOL I LOVE YOUR VIDEOS!! THANK YOU SO MUCH!!

@profrobbob

7 жыл бұрын

BAM!!!

how would I find the x and y intercepts of f(x)= -|x-3|+2 ?

looking for bibliography on algebra word problems. Any suggestions. ??

Can you explain the difference when transforming a graph from y=f(x) to y=|f(x)| function. I'm very confusing on how to graph them.

amazing best teacher!

@profrobbob

8 жыл бұрын

+Quest thanks!

This it's pretty nice thanks

@profrobbob

6 жыл бұрын

Thanks for studying and subbing!

My professor requires us to apply the transformations to a given point, (ex: you're given (0,0) and your equation is: y= -|-2/3(x-3)|+4 ). I understand that you would add 3 to the x coord since you're shifting to the right 3 units and add 4 to the y-coord since you're going up 4 units, but for reflections, stretches, and compressions, I'm not sure what to do. Especially when it's a fraction, and is there a certain order that you must apply these transformations, or does it not matter? I love your sound effects btw.

I have to say you're awesome!!!!

@profrobbob

8 жыл бұрын

+Andrews Fam BAM!!! Don't forget to like, sub and share too:)

@andrewsfam8000

8 жыл бұрын

Will absolutely do!

@profrobbob

8 жыл бұрын

+Andrews Fam thanks!

just wondering if you can recommend some bibliography on this topic. How do we go from equations of of a line Y=mx+b, or point slope, or standard form to transformations? what are the values a, b, c, and d in that equation coming from. I notice the equation y= a. b(x-c) +d has four variables. Are they derived from y=x? Before I really understand how to use it, i want to understand a, b,c, and d values where do they stem from?

@profrobbob

7 жыл бұрын

Every graph has a Parent Function... lines, absolute values, parabolas, sine functions etc. The transformations I discuss in this video repeat in all of these types of graphs and work the same. Seeing the four transformations in a linear function is a bit hard to see at times. Yes there is m and b changing slope and y intercept. For more complicated graphs like parabolas you get those equations into Standard Form using Completing the Square. You will see Transformation concepts repeated over and over. kzread.info/dash/bejne/dZelk8OKdKbMhqg.html and kzread.info/dash/bejne/dWme0MOscpXeZbw.html and kzread.info/dash/bejne/q4Zr25qhqbLWdLg.html and kzread.info/dash/bejne/q4Zr25qhqbLWdLg.html etc.

@josedelval4008

7 жыл бұрын

I actually think i figured it out. All are x and y values!!! of course! on the grid all are x and y.... now Y= +/- a [+/-b (x-c)] +d, a, b, c, and d are all x and y values modifying "transforming" the initial equation y= mx+b. I would like to show you something but i would like to chat with you via e-mail. I wrote you one already last week where I said ratios and rates of changes are CRUCIAL. let me know....

@profrobbob

7 жыл бұрын

I have that email and I will reply soon:) I have been in required preschool training so that got put on the back burner for a bit.

@josedelval4008

7 жыл бұрын

Mr. Tarou, my apologies...i did not mean to rush you. I was just into the subject and thinking loud but no rush at all. no need for answers to my em-mail neither. I know you are busy and you also give a lot by doing this. Please do not worry at all about answering. and thanks again for your dedication.

@profrobbob

7 жыл бұрын

No apology needed:):):) I am going to be emailing you soon.

great video thanks

@profrobbob

8 жыл бұрын

+Travis Banks :)

why does it shift to left even if the constant in the absolute value is positive

You have pretty good Cursive handwriting.

@profrobbob

7 жыл бұрын

Thanks!

Awesome video

@profrobbob

9 жыл бұрын

Iago Soriano thanks for watching and subbing!

"ProfRobBob", thank you for a great presentation. I was reviewing my son's home work and had forgotten how these are done. I thought, it's easy, just take the function out of the absolute value and graph for both the (+) and (-) cases; but, that didn't work. Why? Anyway, from reviewing his math book, I understood most of the translations, except for when the coefficient of "X" is other than "1". But, thanks to you, now I got that too. Can anyone comment and let me know why we can't graph these using the (+) and (-) cases of evaluating an absolute value? Thanks.

@profrobbob

5 жыл бұрын

Thanks for being and involved parent and for choosing my channel to help you "study"! Try watching this video to help with how you're thinking of graphing... kzread.info/dash/bejne/qqV8o6uqhMuYc7g.html

when will you upload again? we miss you!

@profrobbob

7 жыл бұрын

If you want to see what I have been up to just check out my Facebook page facebook.com/profrobbob/ I am Close Captioning my videos and asking for help all the time. kzread.info/dash/bejne/po16pbGufc3HYbw.html I want to post new videos... redoing some old ones that I could improve and going deeper into Calculus. But I also want to help the deaf and non-English speaking students through CC's.

@megansnyd74

2 жыл бұрын

@@profrobbob I just got back from vacation earlier this month, but took a pretty bad fall during my vacation. Still, I am planning on captioning more of your videos as soon as my doctor releases me to sit up for more extended periods. I broke 3 vertebrae in my lower back in the fall, but only bruised the spinal cord, so I am restricted to lying down for a month (which started on July 2, 2022.) BTW, there was no damage done to the actual spinal cord. I will work on finishing up the captioning of the ones I have not been finished as soon as I am cleared to sit up again

sub you! teaching better then my Alg.2 teacher

@profrobbob

7 жыл бұрын

THANKS! Please share my channel and your experience with your teacher and classmates as an additional "after school" study reference:D

Please do Spherical Triangles!

How would I graph something like |x|-|x-3| ?

@profrobbob

7 жыл бұрын

Graph y=|x| and y=|x-3| on the same coordinate system, pick some x values identify the y's from the two graphs, subtract and plot new point. Repeat as many times as needed to see the picture of |x|-|x-3| develop.

@UnderTheEndlessRain

7 жыл бұрын

Thank you so much!!

@profrobbob

7 жыл бұрын

:)

ty, bro :')))

@profrobbob

3 жыл бұрын

BAM!!!

What about a function f(x) = |x-2|-x?

@profrobbob

8 жыл бұрын

To graph by hand make separate graphs for y=|x-2| and y=x on the same x y axis. For selected x values take the y from y=|x-2| and y=x, subtract them, and plot the new y for these selected x values. Connect the dots and there is your graph:)

@angelolamparas

8 жыл бұрын

wow. I got it. thanks a lot !

@profrobbob

8 жыл бұрын

...like BAM?!!!

How do you graph y=3|x|

@profrobbob

8 жыл бұрын

+Mr FreshBest Your graph has a vertical stretch multiple of three. So take y=|x| and move all the points 3 times as far from the x axis. What was point (2,2) will now be (2,6) for example.

@googlename9851

8 жыл бұрын

oh ok, thanks.

So....Maybe this is a silly question...but are Absolute value functions actually...linear? I mean I know it's technically two straight lines... but the shape is a V...which technically isn't a line...

You should've had an example where A is 0

@profrobbob

7 жыл бұрын

There can never be too many examples:)

I watched the full ad hope you got some cash

@profrobbob

5 жыл бұрын

BAM!!! Thanks for the support...next time you only need 30seconds to be helpful:)

Like the math emeril lagasse or something

@profrobbob

7 жыл бұрын

BAM!!!

c'mon, it was 2015 and he was still using chalk

@profrobbob

6 жыл бұрын

It is 2017 and I am still using chalk:D

@barta5ot-395

6 жыл бұрын

damn. keep it up. ur vids are amazing

les multiplication c'est trop nullllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllĺll😨😴😕😮😦😏 !!!!!!!!!!!!!!!!!!!!