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(6*(cos(3*x))^2)'The calculation above is a derivative of the function f (x)
(6)'*(cos(3*x))^2+6*((cos(3*x))^2)'
0*(cos(3*x))^2+6*((cos(3*x))^2)'
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*(cos(3*x))'
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*-sin(3*x)*(3*x)'
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*-sin(3*x)*((3)'*x+3*(x)')
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*-sin(3*x)*(0*x+3*(x)')
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*-sin(3*x)*(0*x+3*1)
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*3*(-sin(3*x))
0*(cos(3*x))^2+6*2*(cos(3*x))^(2-1)*-3*sin(3*x)
0*(cos(3*x))^2+6*-6*cos(3*x)*sin(3*x)
-36*cos(3*x)*sin(3*x)
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