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Choose the function that expresses the relationship `13x+4y^3=1` as a function, `y = f(x)`, if possible.
`f(x)=(1-13 x)/4`
`f(x)=root(3)((1-13 x)/4)`
This equation cannot be expressed as a function
`f(x)=sqrt((1-13 x)/4),-sqrt((1-13 x)/4)`
Box 1:
Select the best answer
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