Let
be a rectangular
matrix with column vectors
, i.e.
Then we have
and the product of the two is
Because the columns of
are orthonormal, we have
which means
reduces to an
matrix with ones along the diagonal and zero everywhere else, i.e.
where
denotes the identity matrix. This means the solution to
is given by
Answer:
Brainleist here!
Step-by-step explanation:
4/5 ^2 + 4/5
16/25 + 4/5
16/25+20/25
36/25
1.44
<span>The apothem is the distance from the center to the midpoint of a side. You can make a right triangle out of the apothem, half a side, and a line from the center to the corner. Its base is half a side so 13.5 and its height is 32.6. The area of the triangle is 13.5*32.6*1/2 = 220.05. There are 16 of these triangles in the octagon (2*8). 220.05*16 = 3520.8.</span>