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(((cos(3*x))^1)/2)'The calculation above is a derivative of the function f (x)
(((cos(3*x))^1)'*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*(cos(3*x))'*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*-sin(3*x)*(3*x)'*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*-sin(3*x)*((3)'*x+3*(x)')*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*-sin(3*x)*(0*x+3*(x)')*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*-sin(3*x)*(0*x+3*1)*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*3*(-sin(3*x))*2-((cos(3*x))^1*(2)'))/(2^2)
(1*(cos(3*x))^(1-1)*-3*sin(3*x)*2-((cos(3*x))^1*(2)'))/(2^2)
(-3*sin(3*x)*2-((cos(3*x))^1*(2)'))/(2^2)
(-3*sin(3*x)*2-((cos(3*x))^1*0))/(2^2)
(-3*sin(3*x))/2
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