Hi. I don't quite get this: At the point where the function f(x) = e^x intersects the y-axis the tangent is drawn. Find the x-coordinate of the intercept of this tangent with the x-axis. ?
1 Answer
Explanation:
The given function is
A tangent is said to be drawn at the point where
Let's find this
The
So, a tangent is drawn at the point where
Now, we need to find an equation for the tangent drawn at this point.
Let's differentiate
The derivative of
Now, we need to find the gradient of the tangent at
Let's substitute
So, the gradient of the tangent is
We can now write an equation for the tangent drawn at
Finally, we are required to find the
So let's the equation of the tangent equal to zero:
Therefore, the tangent intersects the