Given the ellipse
x2 + y2 = 1
4 9
what are the points where the tangent line is vertical?
Given the ellipse
x2/4 + y2/9 = 1
What are the points where the tangent line is vertical?
(In narrative, the problem reads: given the ellipse x squared divided by 4, plus y squared divided by 9, equals 1, what are the points where the tangent line is vertical? The problem is also attached in MS Word, in case you need it.)
This shows how to find vertical tangent line to an ellipse.