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hashimoto-kei
January 26, 2026
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AkarengaLT vol.41
AkarengaLT vol.41 に登壇した際の資料です。
https://engineercafe.connpass.com/event/379434/
hashimoto-kei
January 26, 2026
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Transcript
2026/1/25 hashimoto-kei AkarengaLT Vol. 41
ࣗݾհ
໊લɿhashimoto-kei
None
ग़ɿԬ
ॴଐɿελʔτΞοϓ @Ԭ
ݞॻɿݚڀһ
ࣄɿΤϯδχΞ
ٕज़ελοΫɿPython, AWS
झຯɿαφ, Podcast
͖ͳຊɿNand2Tetris
https://www.oreilly.co.jp/books/9784814400874/
ࠓͷςʔϚ
લճͷଓ͖
ֶͷΈ
https://www.chikum a shobo.co.jp/product/9784480095589/
ָ͠Έํ
ϓϩάϥϛϯά
ڝϓϩ ⏱
ݴޠॲཧܥ ⚙
ֶ
डݧֶ ⏱
ֶͷΈ ⚙
ڝϓϩ ⏱ ݴޠॲཧܥ ⚙
डݧֶ ⏱ ֶͷΈ ⚙
डݧֶ ⏱ ެཧओٛ ⚙
डݧֶ ⏱ ެཧओٛ ⚙ 👉
༡ΜͰΈΔ
🥳
͔͜͜Β෮श
ࢹ֮Խ
ճసߦྻ
None
ؙ҉ه...?
ਤͰे 1
(1, 0) ͱ (0, 1) Λ θ ͚ͩճస 1
1 1
ࡾ֯ؔͷఆ͔ٛΒ ͕࣍Γཱͭ 1
None
·ͱΊͯॻ͘ͱ
None
Α͘ݟΔͱ୯Ґߦྻʹͳ͍ͬͯΔ
🎉
ࢹ֮Խ
ࡾ֯ؔͷՃ๏ఆཧ
None
ؙ҉ه...?
ਤͰे
1 1
ճసߦྻʹ͍ͭͯ ࣍ͷ͕ࣜΓཱͭ
None
β ͚ͩճసͤͯ͞ɺ͞Βʹ α ͚ͩճస Ұؾʹ α + β ͚ͩճస
࠶ܝ
None
͜ΕΛ͏ͱɺ ࣍ͷ͕ࣜΓཱͭ
None
͜͜Λܭࢉ͢Εɺsin(α + β) = sin α cos β + cos
α sin β ͕ಘΒΕΔ
͜͜Λܭࢉ͢Εɺcos(α + β) = cos α cos β - sin
α sin β ͕ಘΒΕΔ
🎉
͜͜·Ͱ෮श
🍵
ҰൠԽͷޮ༻
ࡾ֯ؔͷެࣜ܈
ͨ͘͞Μ͋Δ
None
None
None
None
ෳࡶʹݟ͑Δ
Ճ๏ఆཧͰҰൃ 1
None
β = 2πn Λೖ cos β = 1 sin β
= 0
None
β = π Λೖ cos β = -1 sin β
= 0
None
β = π/2 Λೖ cos β = 0 sin β
= 1
None
β = α Λೖ
🎉
ه๏ͷޮ༻
ࡾ֯ؔͷੵม
None
None
ෳࡶʹݟ͑Δ
Ճ๏ఆཧ͔Βಋ͚Δ
None
ه๏Λ͢Δ
None
͜ͷه๏Λ͏ͱɺ Ճ๏ఆཧ͜͏ͳΔ 1
None
ลʑΛ͢ͱ…
None
͜͜ͰɺA, B Λ ࣍ͷΑ͏ʹఆٛ
None
͢Δͱɺα, β ࣍ͷΑ͏ʹදͤΔ
None
͜ΕΛͬͯ ࣍ͷࣜΛॻ͖͢
None
A = α + β B = α - β
α = (A + B) / 2 β = (A - B) / 2
͜Ε͕ূ໌Ͱ͖ͨ
Γͷ 3 ͭ ಉ༷ʹͯ͠ಋ͚Δ
🎉
End … ?
֮͑Δ͚ͩਏ͍😭
ߟ͑Δͷָ͍͠🥳
ڝϓϩ ⏱ ݴޠॲཧܥ ⚙
डݧֶ ⏱ ֶͷΈ ⚙
डݧֶ ⏱ ެཧओٛ ⚙
डݧֶ ⏱ ެཧओٛ ⚙ 👉
ڝϓϩ ⏱ ݴޠॲཧܥ ⚙ 👉
None
Thank you for listening!