Estimated area under y = 0.0x^0
   between x = -2.4 and x = 0.0 using 40 rectangles is 0.0

Estimated area under y = 5.0x^0
   between x = 13.5 and x = 17.5 using 50 rectangles is 19.999999999999993

Estimated area under y = 1.0x^0+ 0.0x^1+ 1.0x^2
   between x = -3.0 and x = 3.0 using 50 rectangles is 24.014400000000006

Estimated area under y = 1.0x^0+ 0.0x^1+ 1.0x^2
   between x = 1.3 and x = 3.0 using 40 rectangles is 9.812840937499994

Estimated area under y = 3.0x^0+ 1.0x^1+ 2.5x^2
   between x = -1.0 and x = 7.0 using 8 rectangles is 274.0

Estimated area under y = 3.0x^0+ 1.0x^1+ 2.5x^2
   between x = -1.0 and x = 7.0 using 100 rectangles is 329.5680000000003

Estimated area under y = 23.7x^0+ -4.0x^1+ 0.0x^2+ 2.1x^3+ 0.1x^4
   between x = -1.5 and x = 5.0 using 40 rectangles is 472.26895722277857

Estimated area under y = 23.7x^0+ -4.0x^1+ 0.0x^2+ 2.1x^3+ 0.1x^4
   between x = -1.5 and x = 5.0 using 400 rectangles is 494.1904987061717