Consider two functions: \(x\; = \;\psi ln\phi\) and \(y\; = \;\phi ln\psi \). Which one of the following is the correct expression for ∂ψ/∂x?

\(\frac{{ln\phi }}{{ln\phi \psi - 1}}\)

\(\frac{{ln\psi }}{{ln\phi ln\psi - 1}}\)

\(\frac{{xln\psi }}{{ln\phi \psi - 1}}\)

\(\frac{{xln\phi }}{{ln\phi ln\psi - 1}}\)

Consider two functions: \(x\; = \;\psi ln\phi\) and \(y\; = \;\phi ln

1.	Consider two functions: \(x\; = \;\psi ln\phi\) and \(y\; = \;\phi ln\psi \). Which one of the following is the correct expression for ∂ψ/∂x?
A.	\(\frac{{ln\psi }}{{ln\phi ln\psi - 1}}\)
B.	\(\frac{{ln\phi }}{{ln\phi \psi - 1}}\)
C.	\(\frac{{xln\psi }}{{ln\phi \psi - 1}}\)
D.	\(\frac{{xln\phi }}{{ln\phi ln\psi - 1}}\)
Answer» B. \(\frac{{ln\phi }}{{ln\phi \psi - 1}}\)

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Consider two functions: \(x\; = \;\psi ln\phi\) and \(y\; = \;\phi ln\psi \). Which one of the following is the correct expression for ∂ψ/∂x?

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