4 мар. 2016 г. · You can directly substitute any value y in the expression using ReplaceAll g /. y -> 1 (*10*) Share Share a link to this answer Copy link How to substitute values of multiple variables into an expression How to replace a list/array of variables in the result? Другие результаты с сайта mathematica.stackexchange.com

Evaluate can be used to resolve a variable to its value in a held argument, but only when it occurs at the top level of the argument.

Replace[expr, rules] applies a rule or list of rules in an attempt to transform the entire expression expr. Replace[expr, rules, levelspec] applies rules to ... ReplaceAll · StringReplace · SequenceReplace

Use KeyValuePattern to replace in a list of rules: ... Associations can be used to specify replacement rules, but the keys are treated as Verbatim values:.

7 февр. 2022 г. · Try y==a+b/.{a->2d+e,b->f+g} and see if that is what you are looking for. That takes the expression y==a+b and does the list of substitutions to it. How to do substitution of a function in mathematica How can I replace a variable in a function with different values ... Другие результаты с сайта stackoverflow.com

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Опубликовано: 15 сент. 2016 г.

This chapter introduces a way to substitute an expression by another expression without changing their values. This is done by setting a substitution rule ...

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Опубликовано: 3 апр. 2022 г.

To replace x with the value 3, you would create the transformation rule x->3. You must type -> as a pair of characters, with no space in between. You can think ...

21 нояб. 2011 г. · The most straightforward way is to put the replacement rule inside the D: D[t^2 /. t -> Sin[r], r] Or use t[r]: D[t[r]^2, r] /. t -> Sin