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Photos Π СВЯЗЬ И В МОЛЕКУЛАХ
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Π связь и в молекулах
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Sin π 6 sin π 7
T g x π
Sin2 π 3
Cosx 2x π
Sin 3π a cos π a
Cos 5 π 7
Cosx 3 2 π π 2
2cos π 2 x 2
Sin2 π 2 x
Π 2 сколько
