If ![A=\left[\begin{array}{ccc}1&0&1\\0&1&2\\0&0&4\end{array}\right]](https://tex.z-dn.net/?f=A%3D%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%26amp%3B0%26amp%3B1%5C%5C0%26amp%3B1%26amp%3B2%5C%5C0%26amp%3B0%26amp%3B4%5Cend%7Barray%7D%5Cright%5D "A=\left[\begin{array}{ccc}1&0&1\\0&1&2\\0&0&4\end{array}\right]")
then show that |3A| = 27|A|
Answers
Answered by
0
Answer:
They are right aligned because you have {array}{lr} change that to {array}{ll} to left align both columns. But generally it is best not to use array for laying out whole equations, it is designed for matrices/arrays. Here I think the amsmath package and its cases environment would be better.
HOPE IT HELPS ✌
Similar questions