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Facebookの数学 暗算編
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Taku Toguchi
September 05, 2012
Technology
4.2k
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Facebookの数学 暗算編
アプリローンチ後の数値を予測しています。
Taku Toguchi
September 05, 2012
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Transcript
'BDFCPPLͷֶ҉ࢉฤ ͱ͙ͪͨ͘ ΞϓϦϩʔϯνޙͷޮՌΛ༧ଌ͢Δ
࿀ਓ͕ผΕͨ %BWJE.D$BOEMFTT-FF#ZSPO *OGPSNBUJPO*T#FBVUJGVMOFU-FF#SZPODPN
0 44 88 132 176 220 1 2 3 4
5 6 7 8 9 10 11 12 13 14 σΠϦʔ Ϣʔβʔ
0 114 228 342 456 570 1 2 3 4
5 6 7 8 9 10 11 12 13 14 σΠϦʔ Ϣʔβʔ ΟʔΫϦʔ σΠϦʔϐʔΫ ΟʔΫϦʔϐʔΫ
σΠϦʔϐʔΫ 0 114 228 342 456 570 1 2 3
ɾ ʹདྷΔ ɾ͘ͱ·ͰʹདྷΔ ɾ૾ΑΓૣ͘དྷΔ
ΟʔΫϦʔϐʔΫ 0 114 228 342 456 570 6 7 8
ɾσΠϦʔϐʔΫͷޙʹདྷΔ ɾԿ͔खΛଧͨͳ͚Ε͜ͷ··
ؒܭଌ 500 583 667 750 833 917 1000 5 10
15 20 25 30
ˋϧʔϧ
ϧʔϧ 500 583 667 750 833 917 1000 5 10
15 20 25 30
Ϗʔϧˋফࣦ ΞαώϏʔϧʂ
ࣗಈंˋফࣦ τϤλʂ
εϚϗˋফࣦ J1IPOFʂ J1IPOFʂ
څ༩ɾใुˋফࣦ ͦΜͳ͊ʂʂ
500 567 633 700 767 833 900 5 10 15
ϧʔϧ ɾʙͷഒΛΩʔʹ͢Δ ɾຖʹഒͣͭԼ͕Δ ɾΩʔഒ΄ͱΜͲͷ߹ɺYY
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ΞϓϦ"ഒ 1.00 1.10 1.20 1.30 10 15 20 25 30
ΞϓϦA ༧ଌ
ΞϓϦ"Ϣʔβʔ 500 583 667 750 833 917 1000 5 10
15 20 25 30 ΞϓϦA ༧ଌ
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ΞϓϦ#ഒ 1.00 1.10 1.20 1.30 10 15 20 25 30
ΞϓϦB ༧ଌ
ΞϓϦ#Ϣʔβʔ 150 168 187 205 223 242 260 5 10
15 20 25 30 ΞϓϦB ༧ଌ
̎༧ଌʹର͢ΔΞϓϩʔν
ೝূμΠΞϩά
ೝূμΠΞϩά ɾແҙຯʹϝʔϧΞυϨεΛऔಘ͠ͳ͍ ɾͳͥͳΒ͞Βʹ͢Δ͔Β ɾٻΊΔݖݶͷଟ͋͞·Γؔͳ͍ QVCMJTI@TUSFBNQVCMJTI@BDUJPOT ɾը໘͕εΩοϓ ɾͦͦ͢Δ
ΞϓϦ"Ϣʔβʔ 150 168 187 205 223 242 260 5 10
15 20 25 30 ΞϓϦA ༧ଌ
·ͱΊ ɾϐʔΫૣ͘དྷΔ ɾϧʔϧ ɾແҙຯʹϝʔϧΞυϨεΛऔಘ͠ͳ͍
ྑ͍χϡʔεΛͭ
ߘʹΑΔϑΟʔυ࿐ग़ ɾഒͷΠϯϓϨογϣϯ ɾ͕๚ ɾਓߘͯ͠ਓਓ͕๚
༑ୡΛট͢Δ ɾQVTIͰΞΫγϣϯΛଅͤΔ ɾҎ্͕๚ ɾਓটͯ͠ਓਓ͕๚
0(ʹΑΔϑΟʔυ࿐ग़ ɾഒͷΠϯϓϨογϣϯ ɾ͕๚ ɾਓߘͯ͠ਓਓ͕๚
͓·͚
'BDFCPPLϖʔδͷ ߘʹରͯ͠ͷԠ ΞϓϦެ։ޙͷॳಈ 㲈
ϑΝϯͷ༑ୡ×ϑΝϯ Y
ʹ͍ͯ͠Δਓ×ϑΝϯ Z
͍͍Ͷ͞ΕΔͰ͋Ζ͏ਓ [ ʹ͍ͯ͠Δਓºʙ ˞࠷େ
͍͍Ͷ͞ΕΔͰ͋Ζ͏ਓ [ ϑΝϯͷ༑ୡ×ϑΝϯ Y ʹ͍ͯ͠Δਓ×ϑΝϯ Z º º ̎ 'BDFCPPLϖʔδͷ
ߘʹରͯ͠ͷԠ ˞͜ΕʹϑΝϯήʔτɺೝূμΠΞϩάͷΛ͔͚Δ㲈ॳಈ
ࠓͷ·ͱΊ ɾϐʔΫૣ͘དྷΔ ɾϧʔϧ ɾແҙຯʹϝʔϧΞυϨεΛऔಘ͠ͳ͍ ɾϑΟʔυʹߘͯ͠Β͓͏ ɾ0(ΞΫγϣϯΛͱͬͯΒ͓͏ ɾॳಈΛ༧ଌ͠Α͏
ϑΝϯμʔ$50 ͱ͙ͪͨ͘ /&9'. IUUQOFYGN IUUQUXJUUFSDPNUBLVUPH
ྫ֎ͷˋϧʔϧ ࢿྉݶఆ
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ݕূ
ΞϓϦ$ഒ 1.00 2.00 3.00 4.00 5.00 6.00 7.00 10 15
20 25 30 ΞϓϦC ༧ଌ
ΞϓϦ$Ϣʔβʔ 150 275 400 525 650 775 900 5 10
15 20 25 30 ΞϓϦC ༧ଌ