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If sin(2x) - cos(2x) = √2sin(2x+Api)
find A, if 0 Integral 2,-2 sqrt (4-x^2)dx ,circle? What's the chance that a tiny planet exists somewhere out in space? Imagine a planet that we could throw in back of spacecraft & bring home!? In what amount of water (mol) there are as many hydrogen atoms as there are in 5,6 l of ammonia? Math problem of cubic spline?