Anonymous

Changes

From Karnataka Open Educational Resources
9 bytes added ,  13:19, 4 December 2013
Line 40: Line 40:  
# 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
+
If <math>B^2-4AC<0</math> then the curve is an ellipse, circle, point or no curve.<br>
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.<br>
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.<br>
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 # ===
1,040

edits