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Chapter 12: Conic Sections. 12.1 Parabola (Distance Formula) (Midpoint Formula) Circle 12.2 Ellipse 12.3 Hyperbola 12.4 Nonlinear Systems. Sections of a Cone. circle. ellipse. parabola. Sections of a Cone ... continued. hyperbola.
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Chapter 12: Conic Sections • 12.1 Parabola (Distance Formula) (Midpoint Formula) Circle • 12.2 Ellipse • 12.3 Hyperbola • 12.4 Nonlinear Systems Math 120 - KM
Sections of a Cone circle ellipse parabola KM & PP AIM2
Sections of a Cone ... continued hyperbola KM & PP AIM2
Degenerate Conic Sections point line Intersecting lines KM & PP AIM2
12.1 Parabolas and Circles Math 120 - KM
The Parabola 12.1 Math 120 - KM
Can You Hear a Pin Drop? A Parabolic Reflector For a Microphone 12.1 Math 120 - KM
Architectural Parabola A Parabolic Archway 12.1 Math 120 - KM
Shine Your Light Forward A Parabolic Headlight 12.1 Math 120 - KM
Parabolic Shadows 12.1 Math 120 - KM
12.1 The Basic Ideas 12.1 Math 120 - KM
9.1 Ex 1: y = 2x2 + 8x + 5 Vertex: (-2, -3) Opens upwards (narrow) Axis of symmetry: x = -2 y -intercept: (0,5) 12.1 {-4,2} {5/3} {17.5327} {3} Math 120 - KM
9.1 Ex 1: y = 2x2 + 8x + 5alternate method Vertex: (-2, -3) Opens upwards (narrow) Axis of symmetry: x = -2 y -intercept: (0,5) 12.1 {-4,2} {5/3} {17.5327} {3} Math 120 - KM
9.1 Ex 2: y = -6x2 + 12x - 2 Vertex: (1, 4) Opens downward (narrow) Axis of symmetry: x = 1 y -intercept: (0,-2) 12.1 {-4,2} {5/3} {17.5327} {3} Math 120 - KM
9.1 Ex 2: y = -6x2 + 12x – 2alternate method Vertex: (1, 4) Opens downward (narrow) Axis of symmetry: x = 1 y -intercept: (0-2) 12.1 Math 120 - KM
12.1 Ex 3: x = 2y2 – 8y + 5 Vertex: (-3, 2) Opens to the right (narrow) Axis of symmetry: y = 2 x – intercept: (5, 0) 12.1 Math 120 - KM
12.1 Ex 3: x = 2y2 – 8y + 5alternate method Vertex: (-3, 2) Opens to the right (narrow) Axis of symmetry: y = 2 x – intercept: (5, 0) 9.1 Math 120 - KM
12.1 Ex 4: x = -2y2 – 4y - 3 Vertex: (-1, -1) Opens to the left (narrow) Axis of symmetry: y = -1 x – intercept: (-3, 0) 12.1 Math 120 - KM
12.1 Ex 4: x = -2y2 – 4y – 3alternate method Vertex: (-1, -1) Opens to the left (narrow) Axis of symmetry: y = -1 x – intercept: (-3, 0) 12.1 Math 120 - KM
The Distance Formula y c b x a 12.1 Math 120 - KM
12.1 Distance Formula Examples Determine the distance from P1 to P2. P1 (-2, 3) P2(2, 0) P1 (5, -2) P2(-3, -1) 12.1 Math 120 - KM
9.1 MIDPOINT Find the point exactly halfway from (-3,0) to (0,4) (0, 4) M(-1.5, 2) (0, 0) (-3, 0) 9.1 Math 120 - KM
y x 12.1 Average the Coordinates! AVERAGE ! 12.1 Math 120 - KM
12.1 Midpoint Examples Determine the midpoint ofP1P2. P1 (-2, 3) P2(2, 0) P1 (5, -2) P2(-3, -1) 12.1 Math 120 - KM
12.1 Circles With a COMPASS How do I make a circle? 12.1 krm 11.2
12.1 Circle: Center (h,k) Radius r (h,k) r The set of all points in a plane that are at a fixed distance, r, called the radius from a fixed point, (h, k), called the center. 12.1 krm 11.2
12.1 x2 + y2 = 1 Center: (0, 0) Radius: 1 The Unit Circle 12.1 Math 120 - KM
12.1 (x + 2)2 + (y – 4)2 = 32 Center: (-2, 4) Radius: 3 12.1 Math 120 - KM
12.1 x2 + (y + 4)2 = 25 Center: (0, - 4) Radius: 5 12.1 Math 120 - KM
12.1 Write the equation of the circle withradius 7 and center (-5, 8). 12.1 krm 11.2
The Equation of a Circle How do I know it’s a circle? Look for ax2+ay2 12.1 krm 11.2
Circle: Standard Form Write the equation of the circle in standard form and sketch the graph: x2 + y2 - 6x + 10y + 25 = 0 Center: (3, - 5) Radius: 3 9.1 krm 11.2
12.2 The Ellipse The Ellipse 12.2 Math 120 - KM
12.2 Ellipse (it fits in a box!) x-intercepts (+ a, 0) y-intercepts (0, + b) 12.2 Math 120 - KM
12.2 Example: Horizontal Major Axis 12.2 Math 120 - KM
12.2 Example: Vertical Major Axis 12.2 Math 120 - KM
12.2 Example: center not at the origin 12.2 Math 120 - KM
12.2 Example: Put in Standard Form First 12.2 Math 120 - KM
12.2 Example continued:Put in Standard Form First 12.2 Math 120 - KM
12.3 The Hyperbolait fits outside the box The Hyperbola X y 12.3 Math 120 - KM
12.3 The HyperbolaSTANDARD FORM X y 12.3 Math 120 - KM
12.3 Hyperbola: x2 is first • Fundamental Rectangle • Asymptotes • Vertices (if x2 – y2…) • Sketch X 12.3 Math 120 - KM
12.3 Example x2 is first 12.3 Math 120 - KM
12.3 Hyperbola: y2 is first • Fundamental Rectangle • Asymptotes • Vertices (if y2 – x2…) • Sketch y 12.3 Math 120 - KM
12.3 Example y2 is first y 12.3 Math 120 - KM
12.3 The HyperbolaNONSTANDARD FORM + + - - 12.3 Math 120 - KM
12.3 The HyperbolaNONSTANDARD FORMExample 1 12.3 Math 120 - KM
12.3 The HyperbolaNONSTANDARD FORMExample 2 12.3 Math 120 - KM
Conics...2300+ years old? Math 120 - KM
12.4 Nonlinear Systems 12.4 Math 120 - KM