5.3. Conics
Chapter 5: Chapter 5 · MATHEMATICS-VOLUME 1 · EN medium
From your actual textbook ✓
What does your textbook say about 5.3. Conics?
Definition . A conic is the locus of a point which moves in a plane, so that its distance from a fixed point bears a constant ratio to its distance from a fixed line not containing the fixed point. The fixed point is called focus, the fixed line is called directrix and the constant ratio is called eccentricity , which is denoted by e. (i) If this constant e = 1then the conic is called a parabola (ii) If this constant e < 1then the conic is called a ellipse (iii) If this constant e > 1then the conic is called a hyperbola
📖 Class 12 Mathematics English Volume 1 2025 Edition www.tntextbooks.in · Page 190
Read from the source
Complete lesson
Definition . A conic is the locus of a point which moves in a plane, so that its distance from a fixed point bears a constant ratio to its distance from a fixed line not containing the fixed point. The fixed point is called focus, the fixed line is called directrix and the constant ratio is called eccentricity , which is denoted by e. (i) If this constant e = 1then the conic is called a parabola (ii) If this constant e < 1then the conic is called a ellipse (iii) If this constant e > 1then the conic is called a hyperbola
Related topics
Want this shaped for your exam marks?
Get an AI answer grounded in your actual textbook — with the exact page reference.
Ask AI about this topic →