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AM28
22.09.2019 •
Mathematics
Triangle abc is a right triangle point d is the midpoint of side ab and point e is the midpoint of side ac. the measure of angle ade is 68 degrees
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Ответ:
Ответ:
The problem lies with non-invertible matrices, i.e. those with determinant 0.
In fact, in order for
to be a group, you need that:
So, this isn't a group