blackpenredpen Sponsors & Brand Deals
blackpenredpen is a YouTube channel based in US with 1,410,000 subscribers. blackpenredpen's top sponsor is Brilliant who sponsored 4 videos. blackpenredpen has worked with 3 distinct brands, including major partners like Brilliant, Brilliant.org, Chegg.
Brands Sponsoring blackpenredpen
Brands that have sponsored blackpenredpen's videos
Recently Sponsored Videos
Latest videos with sponsorships from blackpenredpen
Brilliant Minimum Problem
Sponsored by Brilliant.org
Jan 27, 2026
Can F'(x)=f^-1(x)?
Sponsored by Brilliant
Nov 30, 2025
How To Find A Formula For Delta (epsilon-delta Definition Of A Limit)
Sponsored by Brilliant
Nov 11, 2025
Brilliant Trig Identity Challenge!
Sponsored by Brilliant
Oct 29, 2025
Why Are Integrals So Hard? Remembering The +c?
Sponsored by Brilliant
Sep 12, 2025
Can A^2+i=0?
Sponsored by Brilliant.org
Jul 24, 2025
Believe In Calculus, Not Pictures!
Sponsored by Brilliant.org
Jun 24, 2025
What Integration Technique Do I Use? Q1 To Q5 (trig Sub, U Sub, Di Method, Partial Fraction) Calc 2
Sponsored by Brilliant.org
May 18, 2025
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About blackpenredpen
Sharing the fun of solving math problem!
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