Here is the problem:
Find the y-coordinate of the points on the graph of
from which the tangents to the curve pass through the origin.
Drew the graph of
and sketched two lines, each containing the origin and intersecting the graph in one point.
... chain rule
How do I find the point that I'm looking for on the graph,
I think I'm looking for the equation of each line that contains (0,0) and a point of tangency.
According to my sketch, there seems to be two such points, one in Quadrant I and one in Quadrant IV.
The answer in the back of the textbook is