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(5*sin(x)+4*cos(x))'The calculation above is a derivative of the function f (x)
(5*sin(x))'+(4*cos(x))'
(5)'*sin(x)+5*(sin(x))'+(4*cos(x))'
0*sin(x)+5*(sin(x))'+(4*cos(x))'
0*sin(x)+5*cos(x)+(4*cos(x))'
5*cos(x)+(4)'*cos(x)+4*(cos(x))'
5*cos(x)+0*cos(x)+4*(cos(x))'
5*cos(x)+0*cos(x)+4*(-sin(x))
5*cos(x)-(4*sin(x))
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