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The function `f(x)=e^x +x`,being differentiable and one-to-one, has a differentiable inverse `f^(-1)(x)`. The value of `d/(dx)(f^(-1))` at the point f(log 2) is
A. |
`1/(ln 2)` |
B. |
`1/3` |
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C. |
`1/4` |
D. |
none of these |