azaz1819
22.05.2021 •
Mathematics
ABC is a straight line.
BCDEF is a pentagon.
E
Dia
accu
950D
F 120°
130°
0ܐ
A
B
С
Find the angle marked yº
Solved
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Ответ:
Below is the solution, i hope it helps:
A = 2 x (a^2+x^2)^.5
dA/dx = 2 x (2x)(.5)(a^2+x^2)^-.5) + 2 (a^2+x^2)^.5
= 0 for max or min