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// example 4.4
// find the linear interpolation polinomial
// using lagrange interpolation,
disp('sin(.1)=.09983; sin(.2)=.19867');
P1=legrangeinterpol (.1,.2,.09983,.19867)
// hence;
disp('P(.15)=.00099+.9884*.15')
disp('P(0.15)=0.14925');
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