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The domain of definition of the function `f(x)=sqrt((x-2)/(x+2))+sqrt((1-x)/(1+x))` is `(-oo,-2]uu[2,oo)` b. `[-1,1]` c. `varphi` d. none of these

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Given,` f(x) = sqrt[(x-2)/(x+2)]+sqrt[(1-x)/(1+x)]`
For function to be defined, `(x − 2)/( x + 2) ≥ 0, x ≠ - 2`
` x∈(-∞,-2)∪[2, ∞) …(1) `
And,
...
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