Expression 67: "f" Subscript, 2 "n" "d" "d" "e" "r" "i" "v" "a" "t" "i" "v" "e" , Baseline left parenthesis, "x" , right parenthesis equals "f" Subscript, "d" "e" "r" "i" "v" "a" "t" "i" "v" "e" , Baseline prime left parenthesis, "x" , right parenthesisf2ndderivativex=fderivative′x
67
Expression 68: "f" Subscript, "d" "e" "r" "i" "v" "a" "t" "i" "v" "e" , Baseline left parenthesis, "x" , right parenthesis equals "f" prime left parenthesis, "x" , right parenthesisfderivativex=f′x
68
Expression 69: "D" Subscript, "n" "u" "m" "e" "r" "a" "t" "o" "r" , Baseline equals "b" squared minus 4 "a" Subscript, 1 , Baseline times "c" Subscript, 1 , BaselineDnumerator=b21−4a1·c1
equals=
1616
69
Expression 70: "x" Subscript, "i" "n" "t" 1 , Baseline equals min left parenthesis, StartFraction, negative "b" Subscript, 1 , Baseline minus StartRoot, "D" Subscript, "n" "u" "m" "e" "r" "a" "t" "o" "r" , Baseline , EndRoot Over 2 "a" Subscript, 1 , Baseline , EndFraction , StartFraction, negative "b" Subscript, 1 , Baseline minus StartRoot, "D" Subscript, "n" "u" "m" "e" "r" "a" "t" "o" "r" , Baseline , EndRoot Over 2 "a" Subscript, 1 , Baseline , EndFraction , right parenthesisxint1=min−b1−Dnumerator2a1,−b1−Dnumerator2a1
