【摘要】 讨论二次函数不同内容所呈现不同图象绝对值概念的特有丰富的内涵.更多还原

【Abstract】 We discussed the second power of function which presents various figure due to absolute value,that showed the concept of the absolute has its pecuier, profuse connatation. Once absolute value was invoived, the second power of function presents compound figure that com posed of two sections of parabola.更多还原