To form an ellipse, what is the relationship between the base of the cone and the angle of the plane that intersects the cone? O The plane is parallel to the base of the cone. O The plane may be perpendicular to the base of the cone. O The plane is at an angle that is neither parallel nor perpendicular to the base of the cone. O The plane must be at a 45° angle to the base of the cone.

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A: I am attaching image so that you understand each and every step.

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A: To evaluate the second derivative of the function at the given point.

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A: According to our guideline we can only answer first question and rest can be reposted.

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