Integrating from 0.000000 to 1.000000 with error tolerance of 1.00e-005
 Estimated error is -2.24e-007  for interval [ 0.000,  0.250]
 Estimated error is -2.10e-007  for interval [ 0.250,  0.500]
 Estimated error is -1.83e-007  for interval [ 0.500,  0.750]
 Estimated error is -1.45e-007  for interval [ 0.750,  1.000]
Approximate answer for the integral is   0.8414709848078988
Actual error is  2.33e-015
Press any key to continue . . .