f(x)=3sin(x^2)				f(x)=4x^3+3x^2
liczba wezlow	prostokat	trapez	parabola	liczba wezlow	prostokat	trapez	parabola
500	1,8717	1,8616	1,8683	500	2,012	2	2,0187
1000	1,8667	1,8616	1,865	1000	2,006	2	2,0093
1500	1,865	1,8616	1,8639	1500	2,004	2	2,0062
2000	1,8641	1,8616	1,8633	2000	2,003	2	2,0047
5000	1,8626	1,8616	1,8623	5000	2,0012	2	2,0019
10000	1,8621	1,8616	1,8619	10000	2,0006	2	2,0009