函数y=|ax<sup>2</sup>+bx+c|的研究性教学

函数y=|ax²+bx+c|的研究性教学

SHU XUE JIAO XUE ›› 2014, Vol. 1 ›› Issue (7) : 18-22.

SHU XUE JIAO XUE ›› 2014, Vol. 1 ›› Issue (7) : 18-22.

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