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AkarengaLT vol.41
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hashimoto-kei
January 26, 2026
Science
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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 ⏱
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डݧֶ ⏱ ެཧओٛ ⚙
डݧֶ ⏱ ެཧओٛ ⚙ 👉
༡ΜͰΈΔ
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͔͜͜Β෮श
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ؙ҉ه...?
ਤͰे 1
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1 1
ࡾ֯ؔͷఆ͔ٛΒ ͕࣍Γཱͭ 1
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·ͱΊͯॻ͘ͱ
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Α͘ݟΔͱ୯Ґߦྻʹͳ͍ͬͯΔ
🎉
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ؙ҉ه...?
ਤͰे
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β ͚ͩճసͤͯ͞ɺ͞Βʹ α ͚ͩճస Ұؾʹ α + β ͚ͩճస
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͜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
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ҰൠԽͷޮ༻
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ෳࡶʹݟ͑Δ
Ճ๏ఆཧͰҰൃ 1
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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
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ෳࡶʹݟ͑Δ
Ճ๏ఆཧ͔Βಋ͚Δ
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ه๏Λ͢Δ
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͜ͷه๏Λ͏ͱɺ Ճ๏ఆཧ͜͏ͳΔ 1
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͜͜ͰɺA, B Λ ࣍ͷΑ͏ʹఆٛ
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͜ΕΛͬͯ ࣍ͷࣜΛॻ͖͢
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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!