4月１５日のエンゼルス戦で張本勲のもつプロ野球最多記録の３０８５安打（日米通算）に並んだ。日本で１２７８安打、これで大リーグで通算１８０７安打。この日は黒人初のメジャーリーガージャッキー・ロビンソンの記念日でみんな42番の背番号をつけてます。 イチローのちょっとした歴史的動画集mylist/44071730
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2009年4月17日のブックマーク (2件)
-
ruedap 2009/04/17
- video
- movie
- ichiro
- memorial
- homerun
- 42
リンク -
いろいろな曲線
グラフ描画についての指針 グラフを調べる場合、次のことを念頭において計算を進めればよい。 （１） 曲線の存在範囲（Existence)や座標軸に対する対称性(Symmetry) （２） 座標軸との交点(Intersection)や曲線上の特殊な点の座標(Special point) （３） 関数の増減と極値(One) （４） 関数の凹凸と変曲点(Two) （５） 漸近線(Straight line) 私の高校時代、上記手順を覚えるために頭文字をつなぎ合わせて、 ＳＥＳＩＯＴＳ（セシオッツ） などという語呂合わせを考案したものだ。 例 曲線 Ｙ２＝Ｘ２(１－Ｘ２) のグラフを描いてみよう。 式の特徴から、曲線は、Ｘ軸に関して対称、Ｙ軸に関して対称、原点に関して対称である ので、計算する範囲を、Ｘ≧０、Ｙ≧０ としてよい。さらに、Ｙ２≧０ であるので、 ０≦Ｘ≦１ としてよい。このとき、与えら
-
- 2009年4月18日
- 2009年4月17日
- 2009年4月16日
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