We have the following curve:

So we need to find <span>an equation of the
tangent line to this curve at the point

. So let's find out if this point, in fact, belongs to the curve:
</span>

.
<span>
We also know that:
</span>

<span>
Given that the point is:
</span>

Then we will say that:

Therefore:

Computing the derivative:

So the derivative solved for

is in fact the
slope of the line at the point

, then:

Finally, the tangent line is:

<em>This is shown in the figure below.</em><span>
</span>