MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: DSolving(?) for a given tangent


On 9/20/07 at 3:53 AM, anglewyrm at yahoo.com (AngleWyrm) wrote:

>f[x_] := E^(0.22 x); Plot[f[x], {x, 6, 36}]

>Which plots a nice escalating curve.

>What I would like to know is: Where is the point {x,f[x]} that has a
>45-degree tangent line; ie where is this curve's balance point
>before it really starts taking off?

At that point, the slope of the function will be 1. So, simply
solve for the point where the derivative of the function is 1, i.e.,

In[6]:= FindRoot[D[f[x], x] == 1, {x, 5}]

Out[6]= {x->6.8824}
--
To reply via email subtract one hundred and four


  • Prev by Date: Can i render a Disk[] in Graphics3D?
  • Next by Date: Re: DSolving(?) for a given tangent
  • Previous by thread: Re: DSolving(?) for a given tangent
  • Next by thread: Re: DSolving(?) for a given tangent