Find all the second order partial derivatives of the given function.f(x, y) = x2 + y - ex+y
A. 
= 2 + ex+y; 
= ex+y; 
= 
= ex+y
B. 
= 1 - ex+y; 
= - ex+y; 
= 
= -ex+y
C. 
= 2 - y2ex+y; 
= -x2ex+y; 
= 
= - y2ex+y
D. 
= 2 - ex+y; 
= - ex+y; 
= 
= -ex+y
Answer: D
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