题目

4.7 求下列函数在指定点z0处的泰勒展式:-|||-(1) dfrac (1)({z)^2} ,_(0)=1 ;-|||-(2)sinz, _(0)=1 ;-|||-(3) dfrac (1)(4-3z) _(0)=1+i ;-|||-(4)tanz, _(0)=dfrac (pi )(4).

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