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F4_3.4_判別式與根的性質
F4_3.3_二次公式
IS Ch 7.5-2
IS Ch 7.5-1
F4_Lesson(17102016)
F3Ch3單利息及本利和
F1 Ch3 公式與代數式
IS Ch 1.4-4
IS Ch 1.4-3
YU CHUN KEUNG MEMORIAL COLLEGE