2.1 Day 2 October 09, 2008
2.1 2
:
• .
• .
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2.1 Day 2 October 09, 2008
Function is a special relation.
The set of points that pairs every 1st term with exactly one 2nd term.
"every x has exactly one y"
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2.1 Day 2 October 09, 2008
Coordinate Plane
II
X min
III
I
X max
Domain: all the x­values of the function.
IV
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2.1 Day 2 October 09, 2008
Find the domain of each function:
Linear Function:
Quadratic Function:
Cubic Function:
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2.1 Day 2 October 09, 2008
Find the domain of each function: Find the values which do not give real number solutions.
Radical Function:
Rational Functions:
1.
2.
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2.1 Day 2 October 09, 2008
Operations on Functions
Functions, like numbers, can be added, subtracted, multiplied and divided.
Sum
=
=
Determine the domain.
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2.1 Day 2 October 09, 2008
Operations on Functions
Difference
=
=
Determine the domain.
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2.1 Day 2 October 09, 2008
Operations on Functions
Product
=
=
Determine the domain.
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2.1 Day 2 October 09, 2008
Operations on Functions
Quotient
=
=
Determine the domain.
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2.1 Day 2 October 09, 2008
Homework
2.1 day 2
p.69 (50 ­ 60, 64, 68, 79, 88)
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