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Question Number 108815 by 1xx last updated on 19/Aug/20

$$f\left(x\right)=\frac{1}{\sqrt{1+x}}+\frac{1}{\sqrt{1+a}}+\frac{\sqrt{ax}}{\sqrt{ax+8}}$$ $$x>0,a>0,x\in R,a\in R$$ $$prove:1<f\left(x\right)<2$$

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