1.3 graphs of functions equations are mathematical ___________________________....
DESCRIPTION
Equations are mathematical ___________________________. ______________________ are what make the sentences true. A ________________ is a picture of the solutions.TRANSCRIPT
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1.3 Graphs of Functions
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• Equations are mathematical ___________________________.
• ______________________ are what make the sentences true.
• A ________________ is a picture of the solutions.
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Graphs can be done by hand or with the graphing utility (AKA, GUT)
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Domain and Range
• Domain is the set of ___ values that are included in a function. This is also the directed distance from the ____ axis.
• Range is the set of ____ values that are included in a function. This is also the directed distance from the ____ axis.
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Use the graph of f(x) to find:
1. Domain of f(x) _________2. Range of f(x) _________3. f(2) ________4. f(0) _________5. f(4) _________
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Use the graph of g(x) to find:
1. Domain of g: _________2. Range of g: _________3. f(-2): _________4. f(-6): _________5. f(1): _________
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Increasing, Decreasing, Constant
• To determine if a function is increasing, decreasing or constant, the graph should be read from __________ to _________.
• You must state the _____________ for which the y values are increasing, decreasing, or constant.
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Determine the intervals that the function below is increasing, decreasing or constant.
• Increasing: _______________
• Decreasing: ______________
• Constant: _______________
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Determine the intervals that the function below is increasing, decreasing, or constant.
• Increasing: _______________
• Decreasing: ______________
• Constant: _______________
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Use your GUT to approximate the relative max and min of f(x) = -x3 + x. Then determine the intervals the function is increasing, decreasing, or constant.
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Piece- wise functions
• A piece wise function is a function that is defined by two or more equations over a specified domain.
• To sketch the graph of a piece wise function, you need to sketch the graph of each equation on the appropriate portion of the domain.
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Sketch the graph of f(x) = 2x + 3 x < 1 -x + 4 x > 1
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Sketch the graph of f(x) = x2 + 4x x < 0 -3/2 x 0 < x < 2
3 x > 2
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Sketch the graph of f(x) = 1 – x2 x < 1 2 1 < x < 3 2x – 4 x > 3
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Exit Pass
Determine the intervals over which the functions are increasing, decreasing, or constant. Then find any relative maximum and minimum values. 1. x3 – 2x2
2. x3 + 3x2 – 1