表达式8: "I" equals Start sum from "i" equals 0 to "n" negative 1, end sum, StartRoot, left parenthesis, Delta Subscript, "x" , Baseline , right parenthesis squared positive left parenthesis, Delta Subscript, "y" , Baseline left parenthesis, "i" , right parenthesis , right parenthesis squared , EndRootI=n−1∑i=0Δx2+Δyi2
equals=
4.7 3 2 9 4 3 6 3 8 34.7329436383
8
Exact Arc Length
9
表达式10: Start integral from "a" to "b" , end integral, StartRoot, 1 positive left parenthesis, "f" prime left parenthesis, "x" , right parenthesis , right parenthesis squared , EndRoot "d" "x"∫ba1+f′x2dx
