हल करना (2 ^ (- x) - 1)/(2 ^ (- x) + 1) | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\frac{2^{-x}-1}{2^{-x}+1}$$