By the way, you have awesome videos! In our proving the derivative of cot(x), when we reach the step of (-sin^2x - cos^2x), instead of rewriting the cos^2x, we can factor out a -1 from both and have -1(sin^2x + cos^2x) and reduce it to -1(1). That made it easier for me to work through it but I can definitely appreciate every approach! Once again, awesome! You're helping me to become a better teacher!
TheHumbledTeacher WHY DID I NOT DO THAT?!?!?! haha That is why I love discussing trig proofs in class, and this is a perfect example of the disadvantage of video lessons. The instant back and forth discussion is great for learning. Sometimes the kids show me better ways to finish the proof, and other times I return the favor:) I love teaching and being able to help another teacher means even more, and I thank you for returning the favor. I wish TH-cam was more than just 10 years old and I could have learned from other teachers when I got started 19 years ago!
I wish such great math teachers as you had existed when I was in school... I also wish youtube had existed, the internet, personal computers... When I was in high school calculators still looked like adjustable rulers. Kids today don't know how good they have it with resources like this. Thanks for doing a great job!
And THANK YOU Monte for taking the time to share that story and your compliments with us! I've been teaching for 22 years and have defiantly seen the difference in the "want" to learn student...even with me as their live teacher:) This year I'm teaching International Baccalaureate math and students who do "want" to learn...it's a lot of extra work but it feels like I'm actually "teaching" again! Thanks for watching and please share with anyone who might know someone who would benefit...it's hard to get a million subscribers on an educational channel!!!
+Richard Yabes what a nice compliment, thank you again! The Philippines is my second highest viewing country...so keep telling all your friends to watch, like, subscribe, support the ads and keep sharing this channel with everyone to keep us growing and make us #1...BAM!!!
I cannot stress enough how bad I wish you were my teacher. I have to sit in class for 50 minutes 5 days a week to rack my brain and not learn a thing, to come home and relearn everything so much easier from you. My teacher doesn't care at all. It's like he wants to show off how fast he can do a problem and his writing is so sloppy and crooked. It's awful. My whole class watches these videos to understand. Thanks so much!! Would fail without you.
+Dan Osberg thanks for the great compliment and please THANK the rest of your class for taking the time to watch and learn from Tarrou's Chalk Talk! I'm putting you in charge of making sure they ALL take the time to like, subscribe, support the ads and share with their friends and teachers too:D
ProfRobBob your videos help me a lot at University remember I told you last year I am 29 years old and have gone back to school to do an Engineering BSc her in the Caribbean. So I really need your videos in order to catch up in class because my professors don't like going through every single thing that they say we are supposed to have done in high school. Well yeah I did it but you know 10 years ago is a long time LOL. Good thing your videos are free, if I ever become a millionaire I will donate a million bucks to you :D
John Deere just went back and read some of your comments from last year. I'm glad you are still finding my videos helpful as a refresher and look forward to hearing about the day you have that degree in your hand! Did I understand correctly that this is your first year back? I wish I had videos to help you till the end of your degree but I know with your determination and desire to learn, that you will succeed and excel in all you do! (and we can't wait till you become a millionaire and know that "we helped" just a little towards that accomplishment :)
ProfRobBob haha yeah I made another account the old one I closed off. Yeah its my first year back, the important thing though is these videos you have is what I need most. Our professor teaches what we need to know in class, so its no problem. He offcourse won't teach highschool work stuff like what you have here and as you can see your current videos help me out the most. I am getting along fine with an 70% average in my Maths so I am doing ok. Trying to get it up to the 90% range cause my GPA dropped below 2.0 LOL I failed a C programming class and a electrical circuit class. So am trying my best to get B+ to A+ in mu current math courses as these will raise me back up a lot. I got a B in my pre calculus module so I feel pretty good about that :) I just need to get more serious and invest more time is all. I have no doubt I can do this!!
Hi, me again. In the 2nd example you did the quotient function as g(x)f'(x)-g'(x)f(x)/g(x). Isnt the formula g*f-f*g/g^2? I was having issues with this in an earlier chapter and getting wrong answers when distributing alternate sign integers. I had it g*f-g*f. Here is works with cos x^2, but isn't there a set formula for this?
So Mr. Tarrou, I was practising my Derivative and Complex number skills tonight, and I noticed something: I noticed that i, with its pattern, resembles that of sin's derivative pattern. i, -1, -i, 1, i... and the list goes to constantly repeat from that as the exponents go on, not taking into account any fractional exponents. sin, cos, -sin, -cos, sin... Same here in the case of derivatives, not counting any sum/product/quotient or any other rules. Just wondering, are they related in any way or is this just a coincidence?
Thanks for watching and studying! Please help us keep growing by liking, subbing, supporting the ads and sharing this free resource with teachers, students and friends:D
instead of writing this "-sin^2x- (1-sin^2x)" he should've taken out negative 1 as a common factor and he would've got sin^2x + cos^2x inside the brackets which is also equal to 1 or am I lying?
this is the best channel in learnig
THANK YOU and thanks for watching!
Please sub and share it with everyone too:D
Beautiful explanation
THANK YOU...and thanks for watching and learning from this channel!
Please take the time to like, sub and share it with everyone...BAM!!!
By the way, you have awesome videos!
In our proving the derivative of cot(x), when we reach the step of (-sin^2x - cos^2x), instead of rewriting the cos^2x, we can factor out a -1 from both and have -1(sin^2x + cos^2x) and reduce it to -1(1). That made it easier for me to work through it but I can definitely appreciate every approach! Once again, awesome! You're helping me to become a better teacher!
TheHumbledTeacher WHY DID I NOT DO THAT?!?!?! haha That is why I love discussing trig proofs in class, and this is a perfect example of the disadvantage of video lessons. The instant back and forth discussion is great for learning. Sometimes the kids show me better ways to finish the proof, and other times I return the favor:) I love teaching and being able to help another teacher means even more, and I thank you for returning the favor. I wish TH-cam was more than just 10 years old and I could have learned from other teachers when I got started 19 years ago!
I wish such great math teachers as you had existed when I was in school... I also wish youtube had existed, the internet, personal computers... When I was in high school calculators still looked like adjustable rulers. Kids today don't know how good they have it with resources like this. Thanks for doing a great job!
And THANK YOU Monte for taking the time to share that story and your compliments with us! I've been teaching for 22 years and have defiantly seen the difference in the "want" to learn student...even with me as their live teacher:)
This year I'm teaching International Baccalaureate math and students who do "want" to learn...it's a lot of extra work but it feels like I'm actually "teaching" again! Thanks for watching and please share with anyone who might know someone who would benefit...it's hard to get a million subscribers on an educational channel!!!
Thank you:) She is doing great so far. I have no doubt she will be better that ever when this is all done.
I'm an Engineering students and ProfRobBob you are amazing. You helped me and continuing to help me with my lessons. Thank You so much. :)
+Richard Yabes you are so welcome! Thanks for choosing #ProfRobBob to study with:)
Since I got to college. I consider you as my buddy sir. You're amazing. Eventhough I'm right here in Philippines, I know you're a great professor.
+Richard Yabes what a nice compliment, thank you again!
The Philippines is my second highest viewing country...so keep telling all your friends to watch, like, subscribe, support the ads and keep sharing this channel with everyone to keep us growing and make us #1...BAM!!!
Ok. I'll tell my classmates and colleagues about your channel sir.
+Richard Yabes THANKS :)
When I did the d/dx(cot(x)) I did follow the quotient rule correctly.
I cannot stress enough how bad I wish you were my teacher. I have to sit in class for 50 minutes 5 days a week to rack my brain and not learn a thing, to come home and relearn everything so much easier from you. My teacher doesn't care at all. It's like he wants to show off how fast he can do a problem and his writing is so sloppy and crooked. It's awful. My whole class watches these videos to understand. Thanks so much!! Would fail without you.
+Dan Osberg thanks for the great compliment and please THANK the rest of your class for taking the time to watch and learn from Tarrou's Chalk Talk! I'm putting you in charge of making sure they ALL take the time to like, subscribe, support the ads and share with their friends and teachers too:D
your hand writing on a blackboard is so perfect.
THANKS, 19 years of practice helps John Deere :)
ProfRobBob your videos help me a lot at University remember I told you last year I am 29 years old and have gone back to school to do an Engineering BSc her in the Caribbean. So I really need your videos in order to catch up in class because my professors don't like going through every single thing that they say we are supposed to have done in high school. Well yeah I did it but you know 10 years ago is a long time LOL. Good thing your videos are free, if I ever become a millionaire I will donate a million bucks to you :D
John Deere just went back and read some of your comments from last year. I'm glad you are still finding my videos helpful as a refresher and look forward to hearing about the day you have that degree in your hand! Did I understand correctly that this is your first year back? I wish I had videos to help you till the end of your degree but I know with your determination and desire to learn, that you will succeed and excel in all you do! (and we can't wait till you become a millionaire and know that "we helped" just a little towards that accomplishment :)
ProfRobBob haha yeah I made another account the old one I closed off. Yeah its my first year back, the important thing though is these videos you have is what I need most. Our professor teaches what we need to know in class, so its no problem. He offcourse won't teach highschool work stuff like what you have here and as you can see your current videos help me out the most. I am getting along fine with an 70% average in my Maths so I am doing ok. Trying to get it up to the 90% range cause my GPA dropped below 2.0 LOL I failed a C programming class and a electrical circuit class. So am trying my best to get B+ to A+ in mu current math courses as these will raise me back up a lot. I got a B in my pre calculus module so I feel pretty good about that :)
I just need to get more serious and invest more time is all. I have no doubt I can do this!!
John Deere us either:)
Just keep that positive outlook and your eye on the prize!
this was published on my birthday:)
Lets dedicate this lesson to you @Tracy Kay...BAM!!!
Thanks for tuning in...don't forget to like, sub and share this channel with everyone!
Hi, me again. In the 2nd example you did the quotient function as g(x)f'(x)-g'(x)f(x)/g(x). Isnt the formula g*f-f*g/g^2? I was having issues with this in an earlier chapter and getting wrong answers when distributing alternate sign integers. I had it g*f-g*f. Here is works with cos x^2, but isn't there a set formula for this?
I hate math, but your videos are always a great resource for me.
Thanks for choosing #ProfRobBob as your TH-cam resource Bradley Galloway and I hope I can help turn that hate into a mild dislike...BAM!!! :)
sorry to hear that. tough times calls for unity and strength in numbers, i'll keep her in my prayers.
Excellent explanations!
You're sure doing along of studying...nice job!
perfect entering to class
Great Mustafa Y. thanks for watching!
I hope you will return to watch more, then like, subscribe and share my channel with others:)
I was talking about the second prove there
So Mr. Tarrou, I was practising my Derivative and Complex number skills tonight, and I noticed something:
I noticed that i, with its pattern, resembles that of sin's derivative pattern.
i, -1, -i, 1, i... and the list goes to constantly repeat from that as the exponents go on, not taking into account any fractional exponents.
sin, cos, -sin, -cos, sin... Same here in the case of derivatives, not counting any sum/product/quotient or any other rules.
Just wondering, are they related in any way or is this just a coincidence?
you really helped me! Thanks!
You're welcome Dominic Gutierrez !
Now you can help me by Liking, SUBSCRIBING and sharing my channel with all your friends and classmates:D
part of me knows this is a stupid question but i must ask anyway,
it doesnt matter that the negative is on the cotx instead of on the cscx, right?
Correct, because multiplication is commutative.
you're the best... that helps a lot.
Thanks for watching and studying!
Please help us keep growing by liking, subbing, supporting the ads and sharing this free resource with teachers, students and friends:D
1:43 swerve
+Ryan Young like a ninja move, huh?! :)
My neighbor had her breast cancer come back...so with her treatment she lost her hair. So, we went bald together.
instead of writing this "-sin^2x- (1-sin^2x)" he should've taken out negative 1 as a common factor and he would've got sin^2x + cos^2x inside the brackets which is also equal to 1 or am I lying?
:D:D:D:D YES...that would have been much quicker!
LOOOOOOOOOOVE YOUUUUUUUUU SOOOOOOOOOO MUCH THANK YOU FOR HELPING ME
Sorry for caps.
Nuck Chorris thanks for learning!
ugh now I have to memorize all those proofs again
new look or did you lose a bet? lol