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Nghe mp3
# 135. (★★) 4step 数B 例題8(P21)の類題(平面ベクトル・領域)
math karat
16,188
4 years ago
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斜交座標の知識で解説をします。 慣れてしまえば、図形と方程式の感覚で解けてしまいます。
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