t2_minus_t1 t2_minus_t1: Estimate quadrature error in T1(f,a,b) by subtracting from T2(f,a,b). a b E1 e1 E2 e2 0.00 0.20 -0.000738 -0.000737 -0.000184 -0.000184 0.10 0.40 -0.002896 -0.002894 -0.000725 -0.000724 0.20 0.60 -0.007988 -0.007983 -0.002001 -0.001996 0.30 0.80 -0.018168 -0.018149 -0.004556 -0.004537 0.40 1.00 -0.036575 -0.036520 -0.009185 -0.009130 0.50 1.20 -0.067698 -0.067560 -0.017027 -0.016890 0.60 1.40 -0.117846 -0.117535 -0.029695 -0.029384 0.70 1.60 -0.195774 -0.195120 -0.049434 -0.048780 0.80 1.80 -0.313488 -0.312198 -0.079339 -0.078050 0.90 2.00 -0.487310 -0.484891 -0.123641 -0.121223 Normal end of execution. quit