Expression 16: "f" prime left parenthesis, "x" , right parenthesisf′x
16
Expression 17: StartFraction, "d" Over "d" "x" , EndFraction left parenthesis, "a" sin "x" plus cos left parenthesis, "x" , right parenthesis , right parenthesisddxasinx+cosx
17
Expression 18: "a" sine prime left parenthesis, "x" , right parenthesis plus cosine prime left parenthesis, "x" , right parenthesisasin′x+cos′x
18
Expression 19: "a" cosine "x" minus sine "x"acosx−sinx