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