Re: Derivative Problem

Bobby Armstrong wrote:
> Hello, i need help with this one pronlem,
>
> I need to know the derivative to this equation and the equation to the
line
> that crosses tan to point (0,1)
>
> f(x) = 1 / (x+1)
>
It would help if you started by knowing the definition of a derivative.
Generally speaking, one does not compute derivates of an equation.
One computes derivatives of a *function*.

I would also help if you would first learn how to explain what you need

to *yourself*.  The phrase "equation to the line that crosses tan "
is meaningless gibberish.  What is 'tan'?  You you mean the tangent
function? Or do you mean a geometric tangent to f(x)???