x

a

c

c/a

Δ (c/a)

0

5.76

11.52

2.0015

+0.0015

0.2

5.72

11.43

1.9995

−0.0005

0.4

5.65

11.295

1.999

−0.0010

0.5

5.62

11.262

2.0032

+0.0032

0.6

5.59

11.28

2.016

+0.0160

0.8

5.56

11.17

2.007

+0.0070

1

5.49

10.93

1.9896

−0.0105