Solve the Problem $f ( x , y , z ) = x + e y ^ { + } z$

question 39

Multiple Choice

Solve the problem.
-Find an equation for the level surface of the function $f ( x , y , z ) = x + e y ^ { + } z$ that passes through the point $( 9 , \ln ( 2 ) , \ln ( 9 ) )$ .

• A) \(\ln ( x ) + y + z = 27\)
• B) \(x + e ^ { y + z } = 27\)
• C) \(x + \mathrm { e } ^ { + } \mathrm { z } = 20\)
• D) \(x + e ^ { y + z } = 18\)

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