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Math Help - Find the Inverse Funcction

  1. #1
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    Find the Inverse Funcction

    Find the inverse function of f(x)=e^x+x.
    by the way, plz help me solve this exercise: A particle is traveling upward and to the right along the curve y= lnx. Its x-coordinate is increasing at the rate (dx/dt)= x^(0.5) m/sec. At what rate is the y-coordinate changing at the point (e^2; 2)?
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  2. #2
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    Re: Find the Inverse Funcction

    for the first one, have you used the Lambert W function before?

    for the second, \frac{dy}{dt} = \frac{dy}{dx} \times \frac{dx}{dt}
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  3. #3
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    Re: Find the Inverse Funcction

    Quote Originally Posted by mongducanh5893 View Post
    Find the inverse function of f(x)=e^x+x
    any reason you need the inverse?
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