What is b2 4ac used for?
The discriminant is the part of the quadratic formula underneath the square root symbol: b²-4ac. The discriminant tells us whether there are two solutions, one solution, or no solutions.
What are the 4 conic sections?
A conic is the intersection of a plane and a right circular cone. The four basic types of conics are parabolas, ellipses, circles, and hyperbolas.
What is the formula of conic section?
The standard form of equation of a conic section is Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0, where A, B, C, D, E, F are real numbers and A ≠ 0, B ≠ 0, C ≠ 0. If B^2 – 4AC < 0, then the conic section is an ellipse.
What is b2 4ac called?
discriminant
The solution for the two roots are calculated from the “quadratic formula”: The solution depends on the value of b2 – 4ac. This term is called the “discriminant”.
What are the 3 degenerate conics?
THE THREE DEGENERATE CONICS ARE THE POINT, THE LINE, AND TWO INTERSECTING LINES.
What are the 5 conic sections?
The types of conic sections are circles, ellipses, hyperbolas, and parabolas. Each conic section also has a degenerate form; these take the form of points and lines.
What is focus and directrix?
A parabola is set of all points in a plane which are an equal distance away from a given point and given line. The point is called the focus of the parabola, and the line is called the directrix . The directrix is perpendicular to the axis of symmetry of a parabola and does not touch the parabola.
How do you find the directrix?
How to find the directrix, focus and vertex of a parabola y = ½ x2. The axis of the parabola is y-axis. Equation of directrix is y = -a. i.e. y = -½ is the equation of directrix.
How do I get access to focus?
Current district username and password will allow access to Focus. If you are a parent to a DCPS student, then you must also register a separate parent account from your employee account using a personal email address. Parents/Guardians must register for a new Focus account to access student information.
What is focus?
As part of the District’s goal to ensure effective, equitable, and efficient use of resources, Duval County Public Schools has implemented Focus, a Student Information System. The district’s student information system allows parents to access grades, progress reports and attendance.
How do I login to focus as a parent?
Use your parent ID and password that was issued to you by your school. For logon issues, please contact the front office staff at your school. To request a new user ID and password, please visit your school or the Student Assignment Office with a valid photo ID. View FOCUS Training Tutorial for parents
How do parents access viewview focus training?
View FOCUS Training Tutorial for parents Use your student Pinellas Domain/Network Credentials (R2.D2) to access. If you are having issues, contact your teacher. For Others, please contact your account sponsor/PCS contact.