MCQOPTIONS
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MCQOPTIONS
| 1. |
If (z=ln ( frac{x^2+y^2}{x+y})-e^{ frac{x^2+y^2}{x+y}} ) then find (x frac{ z}{ x}+y frac{ z}{ y} ). |
| A. | (x frac{ z}{ x}+y frac{ z}{ y}= frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} ) |
| B. | (x frac{ z}{ x}+y frac{ z}{ y}=1- frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} ) |
| C. | (x frac{ z}{ x}+y frac{ z}{ y}=1+ frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} ) |
| D. | (x frac{ z}{ x}+y frac{ z}{ y}=- frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} ) |
| Answer» C. (x frac{ z}{ x}+y frac{ z}{ y}=1+ frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} ) | |