4 PIECEWISE FUNCTIONS What You Should Learn I
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#4 PIECEWISE FUNCTIONS
What You Should Learn: ① I can graph any piecewise function. ① I can evaluate piecewise functions from multiple representations. ① I can distinguish between inclusive and exclusive points. ① I can write a piecewise function from multiple representations.
Graphing & Evaluating Piecewise Functions – Day 1 Today’s objective: ①I can graph any piecewise function. ①I can evaluate piecewise functions from multiple representations. ①I can distinguish between inclusive and exclusive points.
Definition of Piecewise • Root word is Piece.
Piecewise Functions: Graphically • Piecewise Functions are Pieces of different functions graphed together on the same coordinate plane. • Each of these Pieces is defined on a different domain. (x intervals) • Graphs are not continuous.
Examples of Piecewise Functions: Graphically
Piecewise Functions: Algebraically • When functions are defined by more than one equation, they are called piece-wise defined functions. • Each equation is a different Piece.
Examples of Piecewise Functions: Graphically
For the following function a) Find f(-1), f(3). b) Find the domain. c) Sketch the graph.
For the following function a) f(-1) = -1 + 3 = 2 f(1) = 3 f(3) = -3 + 3 = 0.
b) Find the domain. -2 -1 0 1 Domain of f(x): [-2, ∞)
c) Graph
c) Graph
Example 2: Graph
Example 3: Graph
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