用Octave求泰勒展开(4)
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常见麦克劳林展开式(4)
\(\frac{1}{1-x}=1+x+\cdots+x^{n}+o(x^{n})\)
求\(\frac{1}{1-x}\)的泰勒展开.
程序代码如下
function [text_result, numeric_result] = func42(order)
    pkg load symbolic;
    x = sym('x');
    question = 1 / (1 - x);
    d = taylor(question, 'order', order + 1);
    text_result = ["\n", disp(d)];
    numeric_result = eval(d);
endfunction
计算5阶泰勒展开,结果如下
>> [text_result, numeric_result] = func42(5)
text_result =
     5    4    3    2
    x  + x  + x  + x  + x + 1

numeric_result = (sym)

     5    4    3    2
    x  + x  + x  + x  + x + 1
计算10阶泰勒展开,结果如下
>> [text_result, numeric_result] = func42(10)
text_result =
     10    9    8    7    6    5    4    3    2
    x   + x  + x  + x  + x  + x  + x  + x  + x  + x + 1

numeric_result = (sym)

     10    9    8    7    6    5    4    3    2
    x   + x  + x  + x  + x  + x  + x  + x  + x  + x + 1
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