IB DP Maths: AA HL复习笔记3.1.2 Radian Measure
What are radians? Radians are an alternative to degrees for measuring angles 1 radian is the angle in a sector of radius 1 and arc length 1 A circle with radius 1 is called a unit circle Radians ar...
IB DP Maths: AA HL复习笔记3.1.1 Coordinate Geometry
What are cartesian coordinates? Cartesian coordinates are basically the x-y coordinate system They allow us to label where things are in a two-dimensional plane In the 2D cartesian system, the hori...
IB DP Maths: AA HL复习笔记2.9.4 Reciprocal & Square Transformations
What effects do reciprocal transformations have on the graphs? The x-coordinates stay the same The y-coordinates change Their values become their reciprocals If y = 0 then a vertical asymptote goes...
IB DP Maths: AA HL复习笔记2.9.3 Modulus Equations & Inequalities
How do I find the modulus of a function? How do I solve modulus equations graphically? To solve |f(x)| = g(x) graphically Draw y = |f(x)| and y = g(x) into your GDC Find the x-coordinates of the po...
IB DP Maths: AA HL复习笔记2.9.2 Modulus Transformations
How do I sketch the graph of the modulus of a function: y = |f(x)|? STEP 1: Keep the parts of the graph of y = f(x) that are on or above the x-axis STEP 2: Any parts of the graph below the x-axis g...
IB DP Maths: AA HL复习笔记2.9.1 Modulus Functions
What is the modulus function? At the vertex The function is continuous The function is not differentiable 转载自savemyexams
IB DP Maths: AA HL复习笔记2.8.2 Polynomial Inequalities
How do I solve polynomial inequalities? STEP 1: Rearrange the inequality so that one of the sides is equal to zero For example: P(x) ≤ 0 STEP 2: Find the roots of the polynomial You can do this by ...
IB DP Maths: AA HL复习笔记2.8.1 Solving Inequalities Graphically
How can I solve inequalities graphically? Consider the inequality f(x) ≤ g(x), where f(x) and g(x) are functions of x if we move g(x) to the LHS we get f(x) – g(x) ≤ 0 Solve f(x) – g(x) = 0 to find...
IB DP Maths: AA HL复习笔记2.7.4 Roots of Polynomials
How do I find the sum & product of roots of polynomials? an is the coefficient of the leading term an-1 is the coefficient of the xn-1 term Be careful: this could be equal to zero a0 is the c...
