Solution

Formula [11] provides a quadratic polynomial approximation p₂(x) for the function f(x):

[11]

We have

[s1]

and

Valuing f, , and at = (0,0), we obtain

f(0,0) = 0	[s3]
	[s4]
	[s5]

Substituting these into [11], our result is

[s6] [s7]

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