latex——公式等號對齊

\begin{align} s_{MQAM}(t) & =[\sum_{n}X_{n}g(t-nT_{s})]\cos\omega_{c}t-[\sum_{n}Y_{n}g(t-nT_{s})]\sin\omega_{c}t \\ & =X(t)\cos\omega_{c}t-Y(t)\sin\omega_{c}t \end{align} 用&放在須要對其的位置code 效果圖：bl

>>阅读原文<<