Exercise Solution 2.5

Let

  • f1(x1x2) = exp(x1 + x2)
  • f2(x1x2) = exp(x1 – x2)

Then

[s1]

and

[s2]

We seek

[s3]

such that

[2.48]

This is obtained as

[s4]

Our interpolated polynomial is

[s5]