1.

The function \[f(x)=1-{{e}^{-{{x}^{2}}/2}}\] is                                     [AMU 1999]

A.            Decreasing for all x            
B.            Increasing for all x
C.            Decreasing for \[x<0\] and increasing for \[x>0\]
D.            Increasing for \[x<0\] and decreasing for \[x>0\]
Answer» D.            Increasing for \[x<0\] and decreasing for \[x>0\]


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