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(25*cos((3*x)/2))'The calculation above is a derivative of the function f (x)
(25)'*cos((3*x)/2)+25*(cos((3*x)/2))'
0*cos((3*x)/2)+25*(cos((3*x)/2))'
0*cos((3*x)/2)+25*-sin((3*x)/2)*((3*x)/2)'
0*cos((3*x)/2)+25*-sin((3*x)/2)*(((3*x)'*2-(3*x*(2)'))/(2^2))
0*cos((3*x)/2)+25*-sin((3*x)/2)*((((3)'*x+3*(x)')*2-(3*x*(2)'))/(2^2))
0*cos((3*x)/2)+25*-sin((3*x)/2)*(((0*x+3*(x)')*2-(3*x*(2)'))/(2^2))
0*cos((3*x)/2)+25*-sin((3*x)/2)*(((0*x+3*1)*2-(3*x*(2)'))/(2^2))
0*cos((3*x)/2)+25*-sin((3*x)/2)*((3*2-(3*x*(2)'))/(2^2))
0*cos((3*x)/2)+25*-sin((3*x)/2)*((3*2-(3*x*0))/(2^2))
0*cos((3*x)/2)+25*3/2*(-sin((3*x)/2))
0*cos((3*x)/2)+25*-3/2*sin((3*x)/2)
(-75/2)*sin((3*x)/2)
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