Error = | Exact 3 u |

Exact 3 = 3 x + 4 x 2

u

x

0.0000002

0.3399998

0.3400000

0.10000

0.0000002

0.7599998

0.7600000

0.20000

0.0000004

1.2599996

1.2600000

0.30000

0.0000006

1.8399994

1.8400000

0.40000

0.0000012

2.4999988

2.5000000

0.50000

0.0000024

3.2399976

3.2400000

0.60000

0.0000052

4.0599948

4.0600000

0.70000

0.0000117

4.9599883

4.9600000

0.80000

0.0000269

5.9399731

5.9400000

0.90000

0.0000625

6.9999375

7.0000000

1.00000