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Grade 11- Concept of functions rev.1.pptx
1. Define functions and related terms;
2. Determine if the given relation represent a function;
3. Define piecewise function; and
4. represent real life situations using functions, including
piece wise functions.
Grade 11- Concept of functions rev.1.pptx
It is the set of first coordinates.
a. Range
b. Domain
c. Abscissa
It is a set of second coordinates
a. Range
b. Domain
c. Abscissa
Find the domain and range of the given ordered pairs.
{(1, -1), (2, -3),(0, 5), (-1, 3), (4,-5), (-1, 5), (4, -4)}
Domain- {-1, 0, 1, 2, 4}
Range- {-5, -4, -3, -1, 3, 5}
Grade 11- Concept of functions rev.1.pptx
is any set of ordered pairs. The set of all first elements of the
ordered pairs is called the domain of the relation, and the set of
all second elements is called the range. Members of these sets
are called elements.
A relation from set A to set B is defined to be any subset
of A x B. if R is a relation from A to B and (a, b)  R, then we
say that a is related to b and it is denoted as a R b.
A B
Functions- is a correspondence between two sets
where each element in the domain, corresponds to
exactly one element in range.
Functions can represent in four ways.
1. A table of values
Example:
2. Ordered pairs
Example: {(-2, 10), (-1, -7), (0, -4), (1, -1), (2, 2)}
3. Graph, and
Example:
4. Equation
Example: y= 3x-4
Determine if the following relations are functions or
not function?
f= { (1, 2), (2, 2), (3, 5), (4, 5)}
g= { ( 1, 3), (1, 4), (2, 5) ( 2, 6), (3, 7)}
h= { ( 1, 3), (2, 6), ( 3, 9), , (n, 3n), }
Determine whether the relationship given in the
mapping diagram is a function or not a function.
Determine whether the relationship given in the
mapping diagram is a function or not a function.
Vertical Lines
A graph represent a function if and only if each
vertical line intersects the graph at the most once.
Vertical Lines
A graph represent a function if and only if each
vertical line intersects the graph at the most once.
Which of the following equation describe a function?
-Display the inputs and corresponding outputs of a
function. Function Tables can be vertical (up and
down) or horizontal (Side to side)
Below is the example of a function table of A(r)=2
r A(r)=2
0.5
1.0
1.5
2.0
2.5
0.79
3.14
7.07
19.63
12.57
Evaluate, prepare a
function table and
graph
f(x)= x+1 if:
a) f (-2)
b) f (-1)
c) f (0)
d) f 1
e) f (2)
X x+1
-2
-1
0
1
2
-1
0
1
3
2
Evaluate, prepare a
function table and
graph
f(x)= 32
+x-5 if:
a) f(-2)
b) f(0)
c) f(4)
d) f
1
2
x 32+x-5
-2
0
4


5
-5
47
15
4
Evaluate, prepare a
function table and
graph
f(x)= 2
if:
a) f (-2)
b) f (-1)
c) f (0)
d) f 1
e) f (2)
r A(r)=2
-2
-1
0
1
2
4
1
0
4
1
-is a function in which more than one formula is used
to define the output. Each formula has its own
domain, and the domain of the function is the
union of all these smaller domains.
Evaluate f (x) when a) x=0, b) x=2 and c) x=4
f (x) = x+2 if x<2
2x+1 if x  2
Graph the following equation
f (x) = 2x-5 if x<-2
2
-3 if x  2
Grade 11- Concept of functions rev.1.pptx
Grade 11- Concept of functions rev.1.pptx
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Grade 11- Concept of functions rev.1.pptx

  • 2. 1. Define functions and related terms; 2. Determine if the given relation represent a function; 3. Define piecewise function; and 4. represent real life situations using functions, including piece wise functions.
  • 4. It is the set of first coordinates. a. Range b. Domain c. Abscissa
  • 5. It is a set of second coordinates a. Range b. Domain c. Abscissa
  • 6. Find the domain and range of the given ordered pairs. {(1, -1), (2, -3),(0, 5), (-1, 3), (4,-5), (-1, 5), (4, -4)} Domain- {-1, 0, 1, 2, 4} Range- {-5, -4, -3, -1, 3, 5}
  • 8. is any set of ordered pairs. The set of all first elements of the ordered pairs is called the domain of the relation, and the set of all second elements is called the range. Members of these sets are called elements. A relation from set A to set B is defined to be any subset of A x B. if R is a relation from A to B and (a, b) R, then we say that a is related to b and it is denoted as a R b.
  • 9. A B
  • 10. Functions- is a correspondence between two sets where each element in the domain, corresponds to exactly one element in range. Functions can represent in four ways. 1. A table of values Example: 2. Ordered pairs Example: {(-2, 10), (-1, -7), (0, -4), (1, -1), (2, 2)}
  • 11. 3. Graph, and Example: 4. Equation Example: y= 3x-4
  • 12. Determine if the following relations are functions or not function? f= { (1, 2), (2, 2), (3, 5), (4, 5)} g= { ( 1, 3), (1, 4), (2, 5) ( 2, 6), (3, 7)} h= { ( 1, 3), (2, 6), ( 3, 9), , (n, 3n), }
  • 13. Determine whether the relationship given in the mapping diagram is a function or not a function.
  • 14. Determine whether the relationship given in the mapping diagram is a function or not a function.
  • 15. Vertical Lines A graph represent a function if and only if each vertical line intersects the graph at the most once.
  • 16. Vertical Lines A graph represent a function if and only if each vertical line intersects the graph at the most once.
  • 17. Which of the following equation describe a function?
  • 18. -Display the inputs and corresponding outputs of a function. Function Tables can be vertical (up and down) or horizontal (Side to side)
  • 19. Below is the example of a function table of A(r)=2 r A(r)=2 0.5 1.0 1.5 2.0 2.5 0.79 3.14 7.07 19.63 12.57
  • 20. Evaluate, prepare a function table and graph f(x)= x+1 if: a) f (-2) b) f (-1) c) f (0) d) f 1 e) f (2) X x+1 -2 -1 0 1 2 -1 0 1 3 2
  • 21. Evaluate, prepare a function table and graph f(x)= 32 +x-5 if: a) f(-2) b) f(0) c) f(4) d) f 1 2 x 32+x-5 -2 0 4 5 -5 47 15 4
  • 22. Evaluate, prepare a function table and graph f(x)= 2 if: a) f (-2) b) f (-1) c) f (0) d) f 1 e) f (2) r A(r)=2 -2 -1 0 1 2 4 1 0 4 1
  • 23. -is a function in which more than one formula is used to define the output. Each formula has its own domain, and the domain of the function is the union of all these smaller domains.
  • 24. Evaluate f (x) when a) x=0, b) x=2 and c) x=4 f (x) = x+2 if x<2 2x+1 if x 2
  • 25. Graph the following equation f (x) = 2x-5 if x<-2 2 -3 if x 2

Editor's Notes

  • #9: If x and y are elements of these sets and if a relation exist between x and y, then we say that x corresponds to y depends on x. We may represent it as the ordered pair (x, y)
  • #10: Question Are the pictures in column A related to column B? How? Column A is a set that contains the different body parts used to sense objects in column B. The rule is to match the body part in A correctly to an object in B.
  • #12: If x and y are elements of these sets and if a relation exist between x and y, then we say that x corresponds to y depends on x. We may represent it as the ordered pair (x, y)