Define a semigroup. Give an example of an infinite semigroup.
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Given the data:
f(3) = 168,
f(7) = 120
and f(9) = 72
If f(k) is estimated as 138 using the Newton’s form of the interpolating polynomial, then find the value of .k
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using LU decomposition method with u11 = u22 = u33 = 1.
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