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CHAPTER 1 QUADRATICS ((1C Quadratic functions (shape: parabola (concave…
CHAPTER 1 QUADRATICS
1C Quadratic functions
shape: parabola
concave upward → a＞0
vertex is the minimum
concave downward → a＜0
vertex is the maximum
vertex: turning point
axis of symmetry
1D finding a quadratic from its graph
x-intercepts
substituting x and y value of a point into the function
concave up → a＞0
1E where functions meet
touching
cutting
missing
1A Quadratic equations
Solving
①factorize→Null Factor Law
②complete the square
③quadratic formula
④Technology
1G quadratic optimsation
finding the vertex
1B Discriminant
Δ=0，1 repeated root
Δ＞，2 distinct real roots
Δ＜0，no real roots
1F problems solving with quadratics
