摘要： \(A_\alpha(x)\) \(\qquad\) \(a^2+b^2=c^2 \) \(\qquad\) \(\sum\limits_{m=0}^\infty\) \(\frac{(-1)^m}{m!}\) \(\qquad\) \(x=\frac{-b\pm\sqrt{b^2-4ac}}{2a 阅读全文