Then s = sampd+s △ MNP
△MNP is all equal to△△△ BEA (corner edge)
There is s △ MNP = s△ BEA = 1/2.
*x*2=x
In △ABE, AE = X.
Then be = √ (4+x 2)
△BOM is similar to△△△ BAE (angle).
There is bo: ba = BM: be
And bo = 1/2.
* Yes
So BM = 1/2.
*BE^2/AB
= 1/4
*x^2
+
1
So am = ab-BM = 1- 1/4.
*x^2
So s =-0.25 x 2+ 1.
+x
The binomial above has a maximum when x=2.