X

Exact solution

Approximate solution

Approximate solution

−1

0.36787944

0.37418684

6.3074 × 10⁻³

−0.8

0.44932896

0.45641056

7.0816 × 10⁻³

−0.6

0.54881164

0.55712374

8.3121 × 10⁻³

−0.4

0.67032005

0.68009815

9.7781 × 10⁻³

−0.2

0.81873075

0.82014445

1.4137 × 10⁻²

0

1.00000000

1.00180376

1.8937 × 10⁻²

0.2

1.22140283

1.24357182

2.2169 × 10⁻³

0.4

1.47182472

1.49774274

2.5918 × 10⁻²

0.6

1.82211881

1.85630581

3.4187 × 10⁻²

0.8

2.22551000

2.26616893

4.0928 × 10⁻²

1.0

2.71828182

2.78212785

6.3846 × 10⁻³