Evaluate the second derivative of e e22.1.png acos(b/x) f(x) = x2 if a = 123 and b = 0.5 at x = 6 using FDA with Ax =0.06.

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A: given f(x)=x3-9x+1 in the interval [2,4] n=5  f(2)=x3-9x+1=23-9(2)+1=8-18+1=-9<0 f(4)=x3-9x+1=43-...

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