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d/dh(ARCSIN((4*h+(h^2)+30*COS(2*3,14/15)+7,5*h*COS(2*3,14/15))/(ROT(81,25+2*(h^2)+10*h-7,5*SIN(2*3,14/15)-15*h*SIN(2*3,14/15))*ROT(57,25-15*SIN(2*3,14/15)+(h^2)+2*h*7,5*COS(2*3,14/15))))) = 0
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