Thread: what would it mean by .................................

|A * A|....... A={12,13,1,2,7}...........................
what does this line mean|.................................
thanks in advance

Originally Posted by npm1

|A * A|....... A={12,13,1,2,7}...........................
what does this line mean|.................................
thanks in advance

The determinant.

Originally Posted by npm1

|A * A|....... A={12,13,1,2,7}...........................
what does this line mean|.....................

Is the question about
If it is then that stands for the number of pairs in the cross product of with itself.

Originally Posted by Plato

Is the question about
If it is then that stands for the number of pairs in the cross product of with itself.

would the product be ......
12.12|13.13|1.12|
12.13|13.12|1.13|
12.1|13.1|1.1|
12.2|13.2|1.2|
12.7|13.7|1.7|.........etc then add all that up

Please answer the question: Is this problem about cross products?
If it is, do you understand what a cross product is?
If it is not about cross product, then what is it about?

Originally Posted by Plato

Please answer the question: Is this problem about cross products?
If it is, do you understand what a cross product is?
If it is not about cross product, then what is it about?

the question is aswking this
determine the value of this expression
it also says that |X| denotes the number of elements in X.

Originally Posted by npm1

the question is aswking this
determine the value of this expression
it also says that |X| denotes the number of elements in X.

Please stop sending PMs to me.
I cannot help you if you refuse to answer a simple question.