How to get Taylor polynomial for functions?

Question

Carter Wunch 2021-4-19

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/806702-how-to-get-taylor-polynomial-for-functions

回答： Rafael Hernandez-Walls 2021-4-19

I'm looking to write a program where i can input a function, like exp(x) or sin(x), and have the program return the Taylor polynomials for the function.

This is what I have so far. I am fairly new to Matlab and am still getting used to the software.

str=input('Function? ','s');

T=taylor(s);

sympref('PolynomialDisplayStyle','ascend');

disp T

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Answer 1

Rafael Hernandez-Walls 2021-4-19

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/806702-how-to-get-taylor-polynomial-for-functions#answer_679242

在 MATLAB Online 中打开

You can use a function that is in the MAThWORKS fileexchange (I put the link):

str=input('Function? ','s'); %tray with:  cos(x)
% https://la.mathworks.com/matlabcentral/fileexchange/67519-str2syms-symstr
z = str2syms(str)
T=taylor(z)
% 
T =
 
x^4/24 - x^2/2 + 1