Or, if a matrix is not invertible, then you have infinitely many solutions.
或者矩阵不可逆时,有无穷解。
Otherwise, well, AX equals B has either no solution, or infinitely many solutions. Yes?
否则,此线性方程组无解,或者无穷解?
There can be infinitely many solutions for every project; the goal is to try making this project better than the last one.
每一个项目可能会有很多种设计手法,但是目标是尽量把现在这个项目做得比上一次要好。
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