error regarding syms symbolic mathtool

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grace lim
grace lim 2022-2-21
回答： Star Strider 2022-2-21
i have an error regarding syms,i keyed in all in syms in symbolic however there are stilll some error,
thanks in advance

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回答（2 个）

Steven Lord
Steven Lord 2022-2-21
You're missing an operator between Rid and (R1+Rf). If you want to multiply those two quantities you need to explicitly specify the multiplication operator *.
Star Strider
Star Strider 2022-2-21
Yes, there is.
The expression is missing a multiplication operator —
Rid*(R1+Rf)
↑ ← HERE
MATLAB does not recognise implicit multiplication.

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