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How to convert multivariable functions to one variable function?
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How to convert multivariable functions of two independent variables to functions of one independent variable?
3x+x+1=5-x
LE(x,y)=3x+x+1
f(x)=3x+x+1
RE(x,y)=5-x
g(x)=5-x
The same question 
made with ver 5
You need to use CAS, since GeoGebra simplifies equations automatically.
Open CAS View, type in 3x + x + 1= 5 - x in row 1, and select the Keep Input tool before pressing Enter.
In row 2, define f(x):=LeftSide($1)
In row 3, define g(x);=RightSide($1)
Using $ gives you a dynamic reference to row 1, such that when you modify the equation contained in it, also f(x) and g(x) change accordingly https://wiki.geogebra.org/e...
made with ver 5
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