Err for k = 4

Err for k = 5

Case I

Case II

Case I

Case II

Case III

0.1

1.441269e−13

1.472156e−13

6.439294e−15

6.661338e−15

6.439294e−15

0.2

2.682299e−13

2.589040e−13

2.575717e−14

2.553513e−14

2.553513e−14

0.3

3.570477e−13

3.250733e−13

5.973000e−14

5.950795e−14

5.973000e−14

0.4

4.125589e−13

3.428369e−13

1.072475e−13

1.070255e−13

1.072475e−13

0.5

4.105605e−13

3.077538e−13

1.671996e−13

1.669775e−13

1.669775e−13

0.6

3.550493e−13

2.242651e−13

2.362555e−13

2.360334e−13

2.358114e−13

0.7

2.307043e−13

9.547918e−13

3.104184e−13

3.104184e−13

3.104184e−13

0.8

7.049916e−13

6.750156e−13

3.864686e−13

3.863576e−13

3.863576e−13

0.9

1.261213e−13

2.562395e−13

4.577486e−13

4.577450e−13

4.577450e−13

1.0

3.397282e−13

4.554135e−13

5.193623e−13

5.194734e−13

5.194734e−13