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Let f1,f0, and f1 denote the Lagrange polynomials associated with 1,0, and 1 respec ...
Let f−1,f0, and f1 denote the Lagrange polynomials associated with −1,0, and 1 respectively. (2.1) Find f−1,f0, and f1 and express each one in standard polynomial form, that is, a+bx+cx2 where a,b, and c are real numbers. (2.2) Show that f1(−x)=f−1(x) and f−1(−x)=f1(x). (2.3) Show that f0 and f−1+f1 are even. (2.4) Show f∈P2(R) is even if and only if f∈span{f0,f−1+f1}.
We know that ,If the data point are thenLagrange polynomial is defined as:(2.1) :We have to find and and express in the standard form .Here the Lagrange polynomial associated with are