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From Karnataka Open Educational Resources
→Concept #1 Conic sections
# The four conic sections are circles, ellipses, parabolas, and hyperbolas.
# The four conic sections are circles, ellipses, parabolas, and hyperbolas.
# The general equation for all conics is <math>Ax^2+Bxy+Cy^2+Dx+Ey+F=0</math>
# The general equation for all conics is <math>Ax^2+Bxy+Cy^2+Dx+Ey+F=0</math>
and
and
If<math>B^2-4AC<0</math> then the curve is an ellipse, circle, point or no curve.
If <math>B^2-4AC=0</math> then the curve is a parabola,2parallel lines, 1 line or no curve.
If <math>B^2-4AC>0</math> then the curve is a hyperbola or 2 intersecting lines.
===Notes for teachers===
===Notes for teachers===
===Activity No # ===
===Activity No # ===
