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(3-(2*tan(0.5*x)))'The calculation above is a derivative of the function f (x)
(-(2*tan(0.5*x)))'+(3)'
(2)'*tan(0.5*x)+2*(tan(0.5*x))'+(3)'
0*tan(0.5*x)+2*(tan(0.5*x))'+(3)'
0*tan(0.5*x)+2*((0.5*x)'/((cos(0.5*x))^2))+(3)'
0*tan(0.5*x)+2*(((0.5)'*x+0.5*(x)')/((cos(0.5*x))^2))+(3)'
0*tan(0.5*x)+2*((0*x+0.5*(x)')/((cos(0.5*x))^2))+(3)'
0*tan(0.5*x)+2*((0*x+0.5*1)/((cos(0.5*x))^2))+(3)'
0*tan(0.5*x)+2*(0.5/((cos(0.5*x))^2))+(3)'
0-(cos(0.5*x))^-2
-(cos(0.5*x))^-2
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