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