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Let f(x)=x/(1+x^2) and g(x)=(e^-x)/(1+[x...

Let `f(x)=x/(1+x^2) and g(x)=(e^-x)/(1+[x]),` where [x] is the greatest integer less than or equal to x. Then

A

DU ( f + g )= R-[-2,0)

B

DU ( f + g )= R-[-1,0)

C

`R (f) cap R(g) = ( - 2, (1)/(2))`

D

None of these

Text Solution

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The correct Answer is:
B
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