Algebra INTERPOLATION AND EXTRAPOLATIONExample:Given equation y = x2 + 2x + 3:Plot the curve for x from 0 to 5.Extrapolate the curve and give the value of y at x = 6.Put 6 into the equation evaluatingy, then compare the values.Interpolate the curve at x = 4.5.Put 4.5 into the equation evaluatingy, then compare the values.Extrapolating x = 6 gives a value of y = 48.Using the equation, the actual value of y is 51.Interpolating x = 4.5 gives a value of y = 32.Using the equation, the actual value of y is 32.25.Rev. 0 Page 91 MA-02
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