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((5-cos(x))/(cos(x)+5))'The calculation above is a derivative of the function f (x)
((5-cos(x))'*(cos(x)+5)-((5-cos(x))*(cos(x)+5)'))/((cos(x)+5)^2)
(((-cos(x))'+(5)')*(cos(x)+5)-((5-cos(x))*(cos(x)+5)'))/((cos(x)+5)^2)
(((5)'-sin(x))*(cos(x)+5)-((5-cos(x))*(cos(x)+5)'))/((cos(x)+5)^2)
((sin(x)+0)*(cos(x)+5)-((5-cos(x))*(cos(x)+5)'))/((cos(x)+5)^2)
(sin(x)*(cos(x)+5)-((5-cos(x))*(cos(x)+5)'))/((cos(x)+5)^2)
(sin(x)*(cos(x)+5)-((5-cos(x))*((cos(x))'+(5)')))/((cos(x)+5)^2)
(sin(x)*(cos(x)+5)-((5-cos(x))*((5)'-sin(x))))/((cos(x)+5)^2)
(sin(x)*(cos(x)+5)-((5-cos(x))*(0-sin(x))))/((cos(x)+5)^2)
(sin(x)*(cos(x)+5)-((5-cos(x))*(-sin(x))))/((cos(x)+5)^2)
(sin(x)*(cos(x)+5)+sin(x)*(5-cos(x)))/((cos(x)+5)^2)
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