How to substitute to a variable in a function with a constant

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ijsonvjksrefdsb 2022-9-6

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https://ww2.mathworks.cn/matlabcentral/answers/1795730-how-to-substitute-to-a-variable-in-a-function-with-a-constant

编辑： Stephen23 2022-10-18

I'm trying to substitute some values of t to this equation:

x = 3.0 + 4.0.*t + c.*t.^2 - 2.0.*t.^3;

Unrecognized function or variable 't'.

But it won't work because of the c. The assignment is to avoid using symbolic math, how can I bypass this error? Like it would simply substitute the values of t with c remaining undefined. Thanks

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Stephen23 2022-10-18

编辑：Stephen23 2022-10-18

Original question retrieved from Google Cache:

https://web.archive.org/web/20221018105435/https://webcache.googleusercontent.com/search?q=cache:BSXIczWF834J:https://www.mathworks.com/matlabcentral/answers/1795730-how-to-substitute-to-a-variable-in-a-function-with-a-constant

https://web.archive.org/web/20221018110116/https://www.mathworks.com/matlabcentral/answers/1795730-how-to-substitute-to-a-variable-in-a-function-with-a-constant

How to substitute to a variable in a function with a constant

I'm trying to substitute some values of t to this equation:

x = 3.0 + 4.0.*t + c.*t.^2 - 2.0.*t.^3;

Unrecognized function or variable 't'.

But it won't work because of the c. The assignment is to avoid using symbolic math, how can I bypass this error? Like it would simply substitute the values of t with c remaining undefined. Thanks

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