blackpenredpen

Channel stats

Calculated from videos published in the last 12 months

1 video every 11 days
Publishing pace
Irregular
Publishing regularity
11 min
Average video duration
30 min
Published time per month

Latest videos

Coming up with an "exponential formula"
June 15, 2026
"Will grow old someday & still come to see his content" Proving Quadratic Formula w/ Euler's Formula
June 11, 2026
Factoring x^5+x^4+1 but with only 0, 1, & 2
June 8, 2026
Next up x^4=x. I don't see why not!
May 30, 2026
I thought 0^x=2 was impossible!
May 26, 2026
TMUA 2023 Paper 1 (full solution)
April 25, 2026
Solving an AIME functional equation (how do we "guess" a solution)
April 19, 2026
Finding the "volume" of a 4d sphere
February 21, 2026
My first triple improper integral via spherical coordinates
February 17, 2026
This calculus proof is only for math majors (National Taiwan University entrance exam)
February 15, 2026