Just wanted to say thank you for this video. Your explanations are very straightforward and clear.

@vinteachesmath

3 жыл бұрын

Glad it was helpful! I want these videos to get right to the point! Best wishes for your AP test!

Thank you so much for your videos. I am currently studying for the 2021 AP Calculus AB exam and these are good refreshers, especially for someone like me who gets anxiety for tests a few weeks in advance. :)

@vinteachesmath

3 жыл бұрын

Do your best to prepare, and the rest is up to fate! The preparation is more valuable than the grade you will get on the AP test. No matter score you get, you will be a better version of yourself if you give it your all. I am speaking from the POV of someone that has done very well and very poorly on exams. I wish you the best with the rest of the school year and the AP test!

@lilrey4612

3 жыл бұрын

@@vinteachesmath well said

@jeffersonho6886

3 жыл бұрын

I’m also taking the ap cal ab this year. Good luck!

Hi Vincent, thank you for making this video.

@vinteachesmath

3 жыл бұрын

My pleasure! Best wishes with your AP test!

@franciscohen1299

3 жыл бұрын

i know Im pretty off topic but do anyone know a good place to watch newly released series online?

@kristopheralexis9911

3 жыл бұрын

@Francis Cohen i watch on flixzone. Just search on google for it :)

@chandlermoshe8009

3 жыл бұрын

@Kristopher Alexis yea, have been using FlixZone for since april myself :)

@franciscohen1299

3 жыл бұрын

@Kristopher Alexis Thanks, signed up and it seems like a nice service =) Appreciate it !!

This really helped me! amazing explanations ... Taking the exam this May :)

@vinteachesmath

4 жыл бұрын

Good luck on the AP test! The key is to practice until you are sick of practicing! Also, make sure that you are able to explain the various theorems because there are a lot of concept based questions.

I have my exam Monday and you are helping so much

@vinteachesmath

2 жыл бұрын

Hope the test went well!

Thank you for this video. Who is getting ready for 2022 AP Calc Exam?

@shreenivedithajayakumar

2 жыл бұрын

meee, 6 hours before haha

@Waxkasta

2 жыл бұрын

@@shreenivedithajayakumar And tomorrow I got AP exam

these are so helpful!! tysm. do u think u can post more of the past mc’s?

@vinteachesmath

3 жыл бұрын

I am finishing up the 2019 BC exam, then I will add some more multiple choice. Are you taking AB or BC, Anna?

@annali719

3 жыл бұрын

@@vinteachesmath I’m taking the AB exam this year. Can u also do a video for revolutions and related rates? U explain things so clearly & ty for all u do!!

you make everything so easy to understand. thank you!

@vinteachesmath

2 жыл бұрын

Happy to hear that! I try to get right to the point and make it clear to understand! Hope your AP test went well.

thank you so much!

For question 86, the data says the velocity changes from t=1 to t=2 but the slope on option C doesn't appear to change at all during that interval while option E does. Is there a reason behind this or just a poor graph?

thank you very much i passed my sat

this is so helpful omg

@vinteachesmath

3 ай бұрын

I appreciate you supporting the channel! How was the test?

Thank you

@vinteachesmath

2 жыл бұрын

Welcome!

I just love you so much man

@vinteachesmath

2 жыл бұрын

I am happy to help! Good luck with AP calc!

w video

If the test is this easy, I’ll pass.

@vinteachesmath

3 жыл бұрын

I hope that was a sign that you were ready for the AP test!

This was very helpful! Could you do a video for the free response questions in preparation of the 2021 AP Calculus AB exam?

@vinteachesmath

3 жыл бұрын

I am adding more free response content over the next few weeks. I just added a motion problem video. Which free response topic do you find most challenging?

@benreimer3987

3 жыл бұрын

@@vinteachesmath Washer and disk method are challenging for me

@Ayush-lw8ut

3 жыл бұрын

@@benreimer3987 same

It's cram time boys

@vinteachesmath

3 жыл бұрын

I hope it went well!

Thank you so much!

@vinteachesmath

3 жыл бұрын

You're welcome!

76 is not Sloppy! when f ' =0 in a single point dosn't necessarily mean f is not increasing! like y= x^3 when x=0, y'=0, but the graph is still increasing.

@chrismanson3211

2 жыл бұрын

I'm sorry but not true. Example: y = x^3 --> y' = 3x^2 set = 0 to find critical values. 3x^2=0 yields x=0. Now, create your sign graph test points x=-1 (yeilds positive when you plug into y') next test point of x = 1 (also yeilds positive when you plug into y') but plug in zero, 0=0 niether pos. nor neg. meaning it is not increasing or decreasing at zero. y=x^3 is increasing everywhere except zero. Interval of increasing (-inf, 0)U(0, inf). It is at momentary rest at x=0. The reason for this is if you calculate all the tangent lines as you get close to zero on y=x^3, they becaome a horizontal tangent when approaching zero. All the infinite tangents slopes are positive except for the horizontal tangent at x=0. Now, corners & cusps (i.e y=abs(x) and y = x^(2/3) ) are some strange birds but are doable.

@gokhankelebek

2 жыл бұрын

@@chrismanson3211 when you look at the definition of increasing functions (not in the differentiation sense) for every x_1 < x_2 couple f(x_1) < f(x_2) .

for #80, isn't it when the first derivative has a relative extrema? so the answer would be C) three

Wait... what did he say?

@ 1:25 I totally agree with your answer on 76. Sloppy, sloppy lol.

@vinteachesmath

3 жыл бұрын

It still bothers me! In the free response portion of the test, they are super particular about how solutions need to be written for full credit. Thanks for watching and commenting!

@atomkom773

3 жыл бұрын

@@vinteachesmath hi sorry for late reply but shouldn't it be e since f is increasing [4,5]

@chrismanson3211

2 жыл бұрын

@@atomkom773 Since we're given the graph of f'(x), anywhere the graph is above the x-axis is where f(x) is increasing. Since the graph of f'(x) is below the x-axis (negative) on [4,5] means that f(x) must be decreasing on that same interval. It can also be interpreted that f"(x) is positive on [4,5] since f'(x) is increasing on that interval. It helps me to think about the slopes of the infinite tangents to the curves of f(x) to get a general idea of f'(x), when going in "that direction". The problem with this question is when x = -2,1,3 . f'(x) is neither positive or negative, meaning f(x) is not increasing nor decreasing at those x's so answer B is not correct. The true answer should be (-2, 1) U (1 , 3) excluding -2,1 & 3 like vinteachsmath wonderfully demonstrates in 76.

Thanks so much! Can I ask: Where do you find the graphing calculator online?

How would you do 80 with the TI inspire cx?

@vinteachesmath

3 жыл бұрын

I do not have much practice with that calculator. My school uses the ti 84 model since its cheaper! Best wishes for your AP test.

@noamerez5957

3 жыл бұрын

@@vinteachesmath I figured it out, for future reference its the button next to the 9 on TI inspire cx! Thank you!

This is going to be helpful. Any other tips for studying? Mine is May 24.

@vinteachesmath

3 жыл бұрын

Aside from learning the multiple choice, practice free response questions and pay close attention to the rubrics. It is important to know as much about the scoring process as you can. Another activity I do with students is looking at the sample responses on the AP FRQ page so you can see what a full and partial credit solution looks like in the FRQ section. If you need more specific practice, I would download the list of all the topics, google "ap calculus ab or bc course description" and look for the pages that have all 10 units with a list of all the topics. Go through the list and practice the topics you feel weakest with. I think I will have to make a tips for a 5 video in the future!

@mdstgaming865

3 жыл бұрын

Good luck tommorow man I’ve got it too

@theboys5659

3 жыл бұрын

MDST Gaming yeah gl

Does it matter how old the test question is?

@vinteachesmath

3 жыл бұрын

If you watch the movie Stand and Deliver (1988), you will see the test questions they do resemble a lot of the practice questions you will see in your current classroom. Calculus can stand the test of time! The research that professors do will always be evolving. Math is a growing subject! It will be very interesting to see where math and technology go in the next century.

I don’t understand the last question at all tbh