what is $(-1)^1$ and $(-1)^0$ ?
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not sure if image clear it was in preview
Originally Posted by bigwave not sure if image clear it was in preview Anyone in her/his right mind would expand along the third row: $2\left| {\begin{array}{*{20}{c}} 1&0 \\ 2&{ - 1} \end{array}} \right|$ See here.
Originally Posted by bigwave what is $(-1)^1$ and $(-1)^0$ ? The first example has a (-1)^1 included because the 2nd and 3rd rows were interchanged. The second example didn't move the rows around. -Dan
Originally Posted by bigwave what is $(-1)^1$ and $(-1)^0$ ? Any number, a, to the power 1 is itself, a. Any number, other than 0, to the power 0 is 1. so $(-1)^1= -1$ and $(-1)^0= 1$.