Pei-Hsin Lin 林培心 🌸

1. Comunidad
2. Content Requests and Feedback
3. new feature for maths

Hi Max! If I understand correctly, you're asking for a specialized widget for drawing line segments, similar to what's available in MS Paint or Adobe Photoshop. In case they don't implement your fe...

1. Comunidad
2. Content Requests and Feedback
3. No Statistics and Probability Mastery Challenge?

Hi Arnaud, You're right - Math by Subject > Statistics & Probability doesn't link to a regular mission with Mastery Challenges. I've noticed this, too! But Math by Grade > High School does point to...

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2. Study Group
3. Absolute value equation graphs

You're welcome, Alex! 👍

1. Comunidad
2. News and Updates from Khan Academy
3. Update: High School Math subjects

https://www.khanacademy.org/math/math-1-2-3  I don't understand where numbers like 159 of 522 complete are coming from. Simultaneously, Khan Academy reports that I am 100% in Math I, 98% in Math II...

1. Comunidad
2. Content Requests and Feedback
3. Slant Asymptote Exercises

I'm sorry this happened to you! New sections won't roll out instantaneously, but for now I'd suggest using the following guides and exercises with solutions: PurpleMath: Slant (Oblique) Asymptotes ...

1. Comunidad
2. Study Group
3. Question about an equilateral triangle with side 20

You're right! This problem is overdetermined. Some of the information (i.e., constraints) given are physically contradictory. The height of an equilateral triangle with sides of 20 units must be 10...

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2. Study Group
3. case of rebounding of ball....

In a frictionless world, a ball dropped from a height of 5 m would rebound 5 m. However, air resistance (friction encountered while traveling through the atmosphere) causes enough energy loss in pr...

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2. Study Group
3. Rational Functions

f(x) is discontinuous. The domain of f(x) = (x⁶ - 64)/(x - 2) is (-∞,∞) where x ≠ 2. f(x) is undefined at x = 2 because division by zero is undefined. (x⁶ - 64)/(x - 2) = (x³ - 8)(x³ + 8)/(x - 2) =...

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2. Study Group
3. understanding simplifying square root

Numerically speaking, the square root of a number (n) is the quantity that produces n when multiplied by itself. Geometrically speaking, the square root of a number (n) is the length of a square wh...

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2. Study Group
3. Need explanation for a math question

Thanks for catching that, Lynn.