AP and TS EAMCET Engineering Model Paper 8

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Question : 37 of 160

Marks: +1, -0

If f(x)=log(

1+x

1−x

) then f(x1)+f(x2)=

f(
x1+x2
1+x1x2
)
f(
x1+x2
1−x1x2
)
f(
x1−x2
1+x1x2
)
f(x1)−f(x2)

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