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舊書使用 x̄ (sample mean)，建議改用 μ 。

舊書使用 x̄ (sample mean)，建議改用 μ 。

great video! may I ask what is that pegboard-like thing you're using to connect various materials to, the pole with holes, as well as those metal sheets with holes called? It's a really good thing to have when prototyping!

i make the best door in the cheap price

9:18 Quick Practice 8.14 is similar to 2.15. Only 1 question is deleted. 12:11 Quick Practice 8.15 is similar to 2.16. But part (c) is added.

3:31 Quick Practice 8.13 is similar to 2.14. But the number changes from 9308.5 to 93085, therefore the answer is 9X10^4 + 3X10^3 + 0X10^2 + 8X10^1 + 5X10^0

Quick Practice 8.8 = Quick Practice 2.9 Quick Practice 8.9 = Quick Practice 2.10. Part(b) the question changes to 10^2 and therefore the answer is -500.1 Quick Practice 8.10 = Quick Practice 2.11 Quick Practice 8.11 is not same as Quick Practice 2.12, but you can learn the skills. Quick Practice 8.12 is not same as Quick Practice 2.13, but you can learn the skills.

Halo mau tanya

I need the makecode file, help

終於出片了

Miss Chow yyds(⁎⚈᷀᷁ᴗ⚈᷀᷁⁎)

It's nice. But it seems like a basic proximity sensor based closed loop system. There needs to be one authentic feedback signal involved to satisfy the condition of the user-defined passing protocol to initiate and execute the unlocking routine.

正

can you show the instructions/code to make it? that's amazing

8:31 「Ratio of length 」= 1 cm : 1.8 m 「Ratio of area 」= 1 cm2 : 3.24 m2 正如影片所說，由 長度 變做 面積，是不同的 scale。

Mistake made at 1:06 Left hand side is 「ratio of length 」 Right hand side is 「ratio of area 」 They are not equal after taking square and therefore 「=」should not be used.

Plase, can you share the materias and code that you used?

Nice 👍

por favor me puedes envair el codigo de l progrma

Very Cool Girls! Which micro:board are you using for the robot to clean the floor ? Can you all the components used on your demonstration-all the boards ? Great job explaining the videos!

Donde podria ver el codigo de tus proyectos?

S2 Pythagoras Theorem ruclips.net/video/hsaw6EePnY8/видео.html

This AMAZING!!

Please mention the components I eagerly need it

Good day! Do u have a tutorial on how to do this or the list of materials needed?

8:24 sq. root (75) / 2 = 5 sq. root (3) / 2. I forgot to copy 「/2」

There are few reminders: (1) No need to name the lines. If it is not a proof, state which triangle you are using if there is more than one triangle. And then use the numbers directly. (2) Write (Pyth. Thm.) every time you use it. (3) No need to show your calculation in details. We expect you have calculator. Refer to the video on how much steps I write,

About the last question HKCEE AM 2007: Since dy/dt is -2 only when y = 3, we cannot substitute dy/dt = -2 so early. Therefore, the steps should be When y = 3, x = 8 or -8 (rej) [先計當 y =3，x 是多少] 2x/4 (dx/dt) + 2y (dy/dt) = 0 [之後才 D] When y = 3, 2(8)/4 (dx/dt when y = 3) + 2(3)(-2) = 0 [最後才全部 sub 入去] 4 (dx/dt when y = 3) -12 = 0 dx/dt when y = 3 = 3 m/s

For Q43, I copied the question wrongly. Should be 3x+2y-7=0 for (1) 6x+4y-14=0 for (3) (3) - (4) 正 4個 y 減 負9 個 y

6:37 AB = AC NOT //. Sorry for the mistake!

4:23 2(a+2b) = 3(a-b) 2a + 4b = 3a - 3b 7b = a 7/1 = a/b a:b = 7:1

Fantastic!! You should have way more views! Take a look at promosm. It’s a very powerful tool, you can promote all of your social media profiles, RUclips videos etc!

Good Design!

Useful!

不錯！推進器重心再低少少，再置中少少，磁浮路軌放地下，效果會更佳！

8jd vum.fyi

1. 如果你有短暫記憶，怕有D公式唔記得的話，一開考先將你會唔記得既公式寫左係草稿先。 2. Calculator screen make sure [D] 字 (stands for degree), make sure program 入哂，記得邊條係 program 幾，識用。 3. 太緊張會影響考試，唔識做，深呼吸，先去下一條。 4. M.C. Q1~30 ABCD choices 平均，Q31~45 choices 平均，唔識可數下，選個最少既。 5. 因為疫情關係，我諗份卷會淺，人人都識既題目 請 double check make sure 無 careless mistake 無抄錯數字 先去下一行，做得快 但 抄錯數字無用。 Level 2 aim 40, level 4 aim 70, level 5 aim 80，唔一定要做哂成份卷，你做哂但有好多 careless mistakes 分數可能更低。以 level 4 為例，如果你 A1 A2 全中，B 只做 short Q or long Q part a ，已經好足夠。 當然我唔係叫大家蝸牛式慢慢做卷 然後 做唔切，我只係想強調，一些做卷常唔小心既同學 (代表人物 Alyssa 🤣)，不妨每題做完都望一眼，make sure 無抄錯先去下一題。 最後就係，勤力，盡力，就無悔！DSE 加油！我賜俾大家 清醒的頭腦！精靈的眼睛！勇氣！幸運！

9:39~10:11 The bracket means "AND". I should add back the word "when". When x = 4, y = 16. AND when x = 4^9, y = 4^6.

Method 4： Let X be number of times of "no" until "yes" P(X <= 15 | x > k) > 0.8 P(X > 15 | x > k) < 0.2 0.1^15 / 0.1^k < 0.2 0.1^(15-k) < 0.2

Hi. I loved your vid! I have been trying to search for video that breaks down the ideas in this video. 👏Your lesson for sure is similar to the videos of Doctor Ethan. Dr's explanations are educational and he really helped me a lot on my finals! He is an informative med student in Europe. I recommend you see his YT out and give the Doctor a subscribe! 👉 #DrEthanOnRUclips

Hi, nice video, do you mind sending the notes shown in the video? (I’m not from your school)

0:21 ...the door will open (motor) automatically. 0:59 ...the hanging rack will rotate (motor) and the fans will turn on (motors). 2:25 ...the cleaning car (receiver) will move around...

Type 1 Example：8, 4, change to same bases by 8=2^3 and 4=2^2. And then apply the laws. Type 2 Example：6, 4, change to same bases by 6=2*3 and 4=2^2. And then apply the laws.

Dope 👍👍

0:00 Open Power Director 0:31 Media Room: Import Photo "Greenboard", Video "Example3TeachingVideo", Background Music and Sound effect "byebye" 3:02 Title Room: Add Title and Align 7:13 Audio Mixing Room: Adjust the Sound Levels 8:12 Effect Room: Add video effect 9:08 Transition Room: Add transition effects 10:44 Subtitle Room: Add Subtitles 15:07 Double Checking 16:07 Produce: Export as .mp4 file 17:29 Save Project Other Useful Short Cut: Ctrl + C - Copy Ctrl + V - Paste Shift - Select multiple choices by clicking the first and the last choices. Ctrl - Select multiple choices by clicking the choices one by one.

Could you please turn on the CC?

There is a mistake at 2:38 ~ 2:44 . 「雖然我地知道 population variance / n 就會得出返係 sample variance」

Wow!!