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Olga Andreeva
США
Добавлен 20 июл 2013
Just a channel about math and other topics
AP Computer Science Principles Multiple Choice Practice (Part 4)
Problems taken from apcspths.pbworks.com/w/file/fetch/121964706/Sample%2520Exam%2520Questions.pdf
Intro: 00:00
Problem 1: 00:09
Solving problem 1: 00:36
Solution to problem 1: 02:03
Problem 2: 03:03
Solving problem 2: 04:04
Solution to problem 2: 07:19
Problem 3: 08:04
Solving problem 3: 08:49
Solution to problem 3: 14:13
1) A certain social media Web site allows users to post messages and to comment on other messages that have been posted. When a user posts a message, the message itself is considered data. In addition to the data, the site stores the following metadata.
* The time the message was posted
* The name of the user who posted the message
* The names of any users who comment on the message a...
Intro: 00:00
Problem 1: 00:09
Solving problem 1: 00:36
Solution to problem 1: 02:03
Problem 2: 03:03
Solving problem 2: 04:04
Solution to problem 2: 07:19
Problem 3: 08:04
Solving problem 3: 08:49
Solution to problem 3: 14:13
1) A certain social media Web site allows users to post messages and to comment on other messages that have been posted. When a user posts a message, the message itself is considered data. In addition to the data, the site stores the following metadata.
* The time the message was posted
* The name of the user who posted the message
* The names of any users who comment on the message a...
Просмотров: 193
Видео
AP Computer Science Principles Multiple Choice Practice (Part 3)
Просмотров 1478 месяцев назад
Problems taken from apcspths.pbworks.com/w/file/fetch/121964706/Sample%20Exam%20Questions.pdf Intro: 00:00 Problem 1: 00:10 Solving problem 1: 00:53 Solution to problem 1: 03:00 Problem 2: 03:24 Solving problem 2: 04:30 Solution to problem 2: 08:10 Problem 3: 08:14Solving problem 3: 09:21 Solution to problem 3: 15:08 1. The following question uses a robot in a grid of squares. The robot is repr...
AP Computer Science Principles Multiple Choice Practice (Part 2)
Просмотров 1208 месяцев назад
Problems taken from apcspths.pbworks.com/w/file/fetch/121964706/Sample%20Exam%20Questions.pdf Problem 1: 00:00 Solving problem 1: 00:52 Four grids: 01:41 Solution to problem 1: 06:06 Problem 2: 07:20 Solving problem 2: 07:50 Solution to problem 2: 09:47 Problem 3: 10:38Solving problem 3: 11:16 Solution to problem 3: 13:14 1) The program segment below is intended to move a robot in a grid to a g...
AP Computer Science Principles Multiple Choice Practice (Part 1)
Просмотров 1418 месяцев назад
Problems taken from apcspths.pbworks.com/w/file/fetch/121964706/Sample%20Exam%20Questions.pdf Problem 1: 00:00 Solving Problem 1: 00:39 Problem 1 solution: 04:40 Problem 2: 05:25 Solving Problem 2: 05:36 Problem 2 solution: 07:28 Problem 3: 08:17 Solving Problem 3: 08:57 Problem 3 solution: 12:30 1) A programmer completes the user manual for a video game she has developed and realizes she has r...
2023 AP Computer Science A FRQ #4B
Просмотров 301Год назад
Write the removeNextByFlavor method, which attempts to remove and return one piece of candy from the box. The piece of candy to be removed is the first piece of candy with a flavor equal to the parameter flavor that is encountered while traversing the candy box in the following order: the last row of the box is traversed from left to right, then the next-to-last row of the box is traversed from...
2023 AP Computer Science A FRQ #4A
Просмотров 274Год назад
Write the moveCandyToFirstRow method, which attempts to ensure that the box element at row 0 and column col contains a piece of candy, using the following steps. • If the element at row 0 and column col already contains a piece of candy, then box is unchanged and the method returns true. • If the element at row 0 and column col does not contain a piece of candy, then the method searches the rem...
2023 AP Computer Science A FRQ #3B
Просмотров 327Год назад
Write the longestHeatWave method, which returns the length of the longest heat wave found in the temperatures instance variable. A heat wave is a sequence of two or more consecutive days with a daily high temperature greater than the parameter threshold. The temperatures instance variable is guaranteed to contain at least one heat wave based on the threshold parameter. For example, consider the...
2023 AP Computer Science A FRQ #3A
Просмотров 255Год назад
Write the cleanData method, which modifies the temperatures instance variable by removing all values that are less than the lower parameter and all values that are greater than the upper parameter. The order of the remaining values in temperatures must be maintained. For example, consider a WeatherData object for which temperatures contains the following. The three shaded values shown would be ...
2023 AP Computer Science A FRQ #2
Просмотров 439Год назад
This question involves methods that distribute text across lines of an electronic sign. The electronic sign and the text to be displayed on it are represented by the Sign class. You will write the complete Sign class, which contains a constructor and two methods. The Sign class constructor has two parameters. The first parameter is a String that contains the message to be displayed on the sign....
2023 AP Computer Science A FRQ #1B
Просмотров 203Год назад
Write the makeAppointment method, which searches the periods from startPeriod to endPeriod, inclusive, for the earliest block of duration available minutes in the lowest-numbered period. If such a block is found, the makeAppointment method calls the helper method reserveBlock to mark the minutes in the block as unavailable and returns true. If no such block is found, the makeAppointment method ...
2023 AP Computer Science A FRQ #1A
Просмотров 424Год назад
Write the findFreeBlock method, which searches period for the first block of free minutes that is duration minutes long. If such a block is found, findFreeBlock returns the first minute in the block. Otherwise, findFreeBlock returns -1. The findFreeBlock method uses the helper method isMinuteFree, which returns true if a particular minute is available to be included in a new appointment and ret...
2023 AP Calculus AB FRQ #6
Просмотров 1,6 тыс.Год назад
Consider the curve given by the equation 6xy = 2 y^3. (a) Show that dy/dx = 2y / y^2 − 2x. (b) Find the coordinates of a point on the curve at which the line tangent to the curve is horizontal, or explain why no such point exists. (c) Find the coordinates of a point on the curve at which the line tangent to the curve is vertical, or explain why no such point exists. (d) A particle is moving alo...
2023 AP Calculus AB FRQ #5
Просмотров 1,5 тыс.Год назад
The functions f and g are twice differentiable. The table shown gives values of the functions and their first derivatives at selected values of x. (a) Let h be the function defined by h(x) = f(g(x)). Find h’(7). Show the work that leads to your answer. (b) Let k be a differentiable function such that k’(x) = (f(x))^2 · g(x). Is the graph of k concave up or concave down at the point where x = 4 ...
2023 AP Calculus AB FRQ #4
Просмотров 2,9 тыс.Год назад
The function f is defined on the closed interval [−2, 8] and satisfies f(2) = 1. The graph of f’, the derivative of f, consists of two line segments and a semicircle, as shown in the figure. (a) Does f have a relative minimum, a relative maximum, or neither at x = 6 ? Give a reason for your answer. (b) On what open intervals, if any, is the graph of f concave down? Give a reason for your answer...
2023 AP Calculus AB FRQ #3
Просмотров 1,5 тыс.Год назад
A bottle of milk is taken out of a refrigerator and placed in a pan of hot water to be warmed. The increasing function M models the temperature of the milk at time t, where M(t) is measured in degrees Celsius (°C) and t is the number of minutes since the bottle was placed in the pan. M satisfies the differential equation dM/dt = 1/4 * (40 − M). At time t = 0, the temperature of the milk is 5°C....
AP Computer Science A MC Practice (Part 3)
Просмотров 64Год назад
AP Computer Science A MC Practice (Part 3)
AP Computer Science A MC Practice (Part 2)
Просмотров 126Год назад
AP Computer Science A MC Practice (Part 2)
AP Computer Science A MC Practice (Part 1)
Просмотров 80Год назад
AP Computer Science A MC Practice (Part 1)
Oh my god I've been agonizing over this since our professor went over it in class (I don't know why I keep getting stuck and mixing these things up when it should be a relatively simple concept, right?) but you just made everything make sense in only four minutes. Thank you!!
Yghuhhgt🎉😢😮😮😅😅😊
Great vid🔥🔥
Line 4 TEMPO 1212/1214 is before the TAF was issued. Thank you for your videos. ❤
3:24 to 3:43 very scary and eerie silence
Feel free to use it as some time to reflect on what you've learned 🤪
You probably won't see this since the video is old now but I would like to thank you for your videos. I currently don't have the base knowledge to do most my classes since I moved countries and at home we have a way different curriculum. This video in particular really helped me grasp a concept none of my teachers were willing to teach me. Thank you so much, truly.
Thanks a lot. That really helped
Superb!!
ur r too good thnak uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
howd you get B(10) = 34.183?
Thq now i understand ❤
thank you! :D
W video
W comment
Thank you for the videos! I watched them all and got a lot out of them. I'm going to pass along your page to my 16 year old for your math tutorials. All the best!
Cheers! Good luck with your studying :)
Hi Olga, your videos have been very helpful in my prep for the Part 107. I've been going through each one and making notes. I'm wondering... for METAR questions, do they give you any kind of key for a question like this?
Hello! Happy to hear the videos have been helpful! I don't believe you get any kind of key :(
Thanks! You're videos have been super helpful.
Nice job on talking about the clouds
thank you so much
why are we adding them Im so confusedddd
ong bro im so cooked
Olga, I teach AP Computer Science A, and I'm impressed by your approach to solving FRQs in your videos - excellent work! As a seasoned programmer, I've gained valuable insights into teaching FRQs to students through watching your content. I just wanted to express my gratitude. Thank you!
Wow, thank you for this comment! It means a lot to me- happy to help out! :)
Thank you ✨️✨️✨️
why I got -12.0227 instead of 3.604?
you would have to in put it as (ln(x+3)-(x^4+2x^3). Make sure you put x^4+2x^3 in parenthese but each function in its own parenthese
ASMR
Dude for the last question looking at the graph you can see that x = 2 is the only x coordinate where it is a candidate for a absolute minimum value. Thus it will be the only absolute minimum value in the graph. Therefore the absolute minimum value is f(2) = 1. (f(2) = 1 is given in the question itself).
Hi gang
Thank you so much, I was struggling to understand how to read sectional charts until I came across this video.
Thank you so much for this video! I was struggling to understand how to read sectional charts until I came across this video. Thanks to you once I finally understood how to go about it because of this video and today I passed my test on the first try, 88%! Thank you!!
Congrats!! Happy to have helped out! :)
Thanks
How did you input x into your calculator/expressions? (For part D did you manually enter -.5 for x?)
👍👍👍👍
WOW. This helped me understand so much better! Thank you for this.
Happy to hear! Best of luck with your studying :)
great job i watch them all, thanks!!
the language is confusing where it reads" short final" and then in a( base ) makes you think of the base not final approach. I guess the direction in relationship to the runway is still west.
This video has really simplified things!! Thank you!!
You're welcome! Best of luck studying :)
Thank you, I have a Midterm exam tomorrow
Thanks!
Thank you! Good luck with the rest of your studying :)
. I have learned a lot. Ty
I’ve been studying for this test and your videos are an absolute game changer! Thank you!
Great to hear! Best of luck studying :)
These are tremendously helpful videos, thank you for posting them. Do you have any plans for creating IFR training videos?
Cheers! Unfortunately at this moment, I don't have any plans to create IFR training videos :(
This is by far the most helpful video on the subject. Thank you so much.
Thank you! Good luck with your studying :)
Hello, Thank you for the video. The video is very helpful. At 1:34 you bring up a box to use as a ruler. I'm not familiar with that procedure. How are you doing that? I also am using a Ipad but don't know how to do that.
Great question! At the bottom of these sectional chart maps, there's typically a ruler that displays distances in nautical miles, statute miles, and kilometers: aviation.stackexchange.com/questions/55679/where-is-v15-and-how-do-i-find-it Since the entire section chart image for this problem didn't fit on the screen, I took a screenshot of the bottom half of it and cropped it such that just the ruler remained. I'm using an app called Notability, which allows you to draw on top of photos and drag around the drawings. I used the pen tool to draw a line that was 4 nautical miles long, and then used the 'lasso' feature within Notability to move the line on top of the sectional chart. Let me know if you have any other questions :)
I downloaded notability and was able to measure just as shown in your video. What a great tool to have. Thanks for your informative video and response to my question. I appreciate your help. Happy holidays to you.@@OlgaAndreevaVideos
Glad to hear! Happy holidays to you as well :)
Thank you for clarifying these examples, especially the 2nd scenario. The 2nd scenario was in my book, but explanation was not very clear.
Maybe Im seeing 40 minutes from 47 and you kept saying 20? And then crossed at 20 rather than 40 like the question says???? Mercer was my answer
I think the same
@luxurycommerciale mercer it was. Sill confusing. I passed with 89. You must study because there were several trick questions. Use up the entire 2 hours and the faster you answer the questions AI will make the questions more difficult.
Nope - you guys confused the heck out of me for a second. YES, She's saying 20' SOUTH of 48⁰. Since 48⁰ is essentially 47⁰60'..(I know, it doesn't exist, just trying to oversimplify).... to get to 47⁰40' you need to SUBTRACT 20' from 48⁰ or, (for point of explanation) SUBTRACT 20' from 47⁰60' What do you get? 46⁰40' She kept saying 20 minutes and crossed at 20 minutes because that was the SUBTRACTION amount FROM 48⁰ Again, giving you 47⁰40' I don't know what you saw in your test... if it was the exact question. If you received a checklist of wrong and correct answers from your test, but either you or the test was wrong. In this SPECIFIC example. She is 100% correct.
@@Feat_Forward_Jake yes she had the correct answer that was on the same on test
See, now I'm REALLY confused... Your comment says "mercer it was"... However she said.. ' Garrison' ... Which would be the correct answer... 🤔
You need to discuss about two sets of genome in a diploid cell. This cell has one complete set of genome after telophase in somatic cells during mitosis. This is because of the separation of sister chromatids to poles during anaphase. It is only after S phase of interphase that genome or Complete set of DNA gets copied and the colored bodies after staining in metaphase looks like an X.
omg thank you so much olga I'm your second biggest fan!!!
🫶
I'm your biggest fan
🫶
Thanks! I couldn’t figure out what I was supposed to do with dr/dt
Great video made me understand in-depth of how these forces each work
problem d is wrong LOL
Wrong.
wrong. denied.
Isn't it .size instead of .length when referring to an ArrayList?
Ah yes, good catch! I should have used .size()