Dummy Variable -- from Wolfram MathWorld

Dummy Variable -- from Wolfram MathWorld

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日期:2024-06-11
A variable that appears in a calculation only as a placeholder and which disappears completely in the final result. For example, in the integral int_0^xf(x^')dx^', x^' is a dummy variable since it is "integrated out" in the final answer. Any variable name...看更多