Question: A natural cubic spline S for a function f is defined by {-1+(*-3) +(*- 3)* 3Sx54 S(x) !! la + b(x - 4) +

A natural cubic spline S for a function f is defined by 

A natural cubic spline S for a function f is defined by {-1+(*-3) +(*- 3)* 3Sx54 S(x) !! la + b(x - 4) + c(x 4)? + d(x - 4) 4SxS5 An approximation of f (4.5) is: O 1.8 O 3.3125 O 8.84375 O 3.90625

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