MIDTERMS Flashcards
The locus/path of a point which moves so that it’s distance from a fixed point is in constant ratio to its distance from a fixed line.
Conic Section
Define focus
The fixed point
The constant ratio
Eccentricity
define directrix
the fixed line
They are formed when a plane is made to intersect a right circular cone.
Conic Scetions
By determining the determinant/ the value of eccentricity, what can we identify?
The kind of conic section
What is the kind of conic section if the value of e = 1.0?
parabola (B²-4ac=0)
The conic is an ellipse if the eccentricity is lesser than 1?
ellipse ( e< 1)
What is the eccentricity of hyperbola?
greater than 1
if A = C, the conic is circle. True or False?
True
if A ≠ C but same signs, the conic is ellipse. True or False?
True
if A and C have different signs, the conic is parabola. True or False?
False. Hyperbola
If either A or C is zero, the conic is parabola. True or False?
True da fire
A locus of a point which moves do that it is equidistant from a fixed point called center.
Circle
If the parabola’s axis is parallel to the x -axis, it opens in what direction?
left or right
