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Math Help - Graph of Function F/F'

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    Member FalconPUNCH!'s Avatar
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    Graph of Function F/F'

    So my question is how do I sketch a graph for the F' with the equation f(x) = lnx ? I graphed f(x) but I don't know where to go from there.
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    Quote Originally Posted by FalconPUNCH! View Post
    So my question is how do I sketch a graph for the F' with the equation f(x) = lnx ? I graphed f(x) but I don't know where to go from there.
    Are you going to F(x) = \frac{f(x)}{f'(x)} then F(x) = \frac{\ln x}{\frac{1}{x}} = x\ln x.
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  3. #3
    Member FalconPUNCH!'s Avatar
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    Quote Originally Posted by ThePerfectHacker View Post
    Are you going to F(x) = \frac{f(x)}{f'(x)} then F(x) = \frac{\ln x}{\frac{1}{x}} = x\ln x.
    My professor wants us to graph F' without an equation. He wants us to use the graph of f(x) to graph F'. I'm confused and don't really know what to do for f(x) = lnx
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