The graph of the equation x^2+xy+y^2=5 is an ellipse lying obliquely in the plane, as illustrated in the figure below. A) Compute dy/dx. B)The ellipse has two horizontal tangents. Find an equation of the upper one. The upper horizontal tangent line is defined by the equation y= c) The ellipse has two vertical tangents. Find an equation of the rightmost one.  The rightmost vertical tangent line is defined by the equation x= d)ind the point at which the rightmost vertical tangent line touches the ellipse. The rightmost vertical tangent line touches the ellipse at the point

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter7: Conic Sections And Quadratic Systems
Section7.2: The Ellipse
Problem 70E
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Question: The graph of the equation x^2+xy+y^2=5 is an ellipse lying obliquely in the plane, as illustrated in the figure below.

A) Compute dy/dx.

B)The ellipse has two horizontal tangents. Find an equation of the upper one. The upper horizontal tangent line is defined by the equation y=

c) The ellipse has two vertical tangents. Find an equation of the rightmost one.  The rightmost vertical tangent line is defined by the equation x=

d)ind the point at which the rightmost vertical tangent line touches the ellipse. The rightmost vertical tangent line touches the ellipse at the point

Hint: The horizontal tangent is of course characterized by dy/dx=0. To find the vertical tangent use symmetry, or solve dx/dy=0.

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