Romberg Integration
	Composite Trapezoid rule applied to y = cos(x) on the interval [0,π/2]
i	O(h^2)	O(h^4)	O(h^6)	O(h^8)	O(h^10)
h	0.78539816350000
h/2	0.94805944890000	1.00227987736667
h/4	0.98711580110000	1.00013458516667	0.99999156568667
h/8	0.99678517200000	1.00000829563333	0.99999987633111	1.00000000824610
h/16	0.99919668060000	1.00000051680000	0.99999999821111	1.00000000014571	1.00000000011395