0.400000 2.188800 2. Numerical Integration of Polynomial Given a function f of a real variable x and an interval [a, b] of the real line, the definite integral f(x)dx is defined informally as the signed area of the region in the x-plane that is bounded by the graph of f, the x-axis and the vertical lines x = a and x-b. The area above the x-axis adds to the total and that below the x-axis subtracts from the total. The Riemann integral is defined in terms of Riemann sums of functions with respect to tagged partitions of an interval. Let [a, b] be a closed interval of the real line; then a tagged partition of [a, b] is a finite sequence This partitions the interval [a, b] into nk sub-intervals, where nk function f with respect to such a tagged partition is defined as (b-a)/ k. A Riemann sum of a nk-1 thus each term of the sum is the area of a rectangle with height equal to the function value at the distinguished point of the given sub-interval, and width the same as the sub-interval width In the Riemann integral, the larger number of sub-intervals(nx) or the smaller of the interval(Ak), the more precise of the integral. The question is "what is small enough of the interval?" The proper interval depends on how precise the integral you need to obtain. You can gradually reduce the interval until you obtain the precise integral you need. For this lab, you will start the interval as 0.1, ordo = 0.1, and calculate its integral So. Then, the interval is reduced to half as .-Ao/2, and calculate S1, and so forth. You continue this calculation until the difference ratio of two consecutive integral is less than a small constant that you choose as S E. Find the integral of g(x) and h (x) between-o5 and +0-5 at the precision of = 1.0-6. gx)-9-10x 7x +6x.3 hCx) -8x-2x2-12x3+3x(0, 8,-2,-12,3) (9,-10,7,6)