各別找出 泰勒級數(Maclaurin series) 跟 收斂半徑(radius of convergence)a) y = 1 / ( 1 + x )b) y = 1 / ( 1 + x^2 )c) y = log( 1 + x^2 )d) y = x^3 ˙ e^(-x^2)
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