Hi. I am a bit confused on the definition of multivariable functions. Say you have ##f(x) = x^2 + x## and ##g(x,a) = x^2 + a## where ##a=x##. Is ##g(x,a)## then a mathematically legal multivariable function? Because if you take ## \frac{\partial f(x)}{\partial x}=2x +1## you'll get a different result from ##\frac{\partial g(x,a)}{\partial x} = 2x## even though ##g(x,a)## and ##f(x)## are the exact same functions.(adsbygoogle = window.adsbygoogle || []).push({});

Or am I missing something?

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# Multivariable function definition

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