1.Find the Taylor series generated by f(x) =1/x at a=3.
Where,if anywhere,does the series converge to 1/x?
這題該怎麼寫??
9.Find the horizontal tangents to the graph of the cardioid r=1-cos@,0<=@<=2pi.
(That is, find the points at which horizontal lines tangent to the curve.)_
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