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# APPLICATION OF FUNCTION IN REAL LIFE

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## nikkie lorena

on 21 August 2014

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#### Transcript of APPLICATION OF FUNCTION IN REAL LIFE

APPLICATION OF FUNCTION IN REAL LIFE
WHAT IS A FUNCTION?
its a relation in which each element of the domain is pair with exactly one element of the range.
TRIVIA
ALL FUNCTIONS ARE RELATIONS
BUT NOT ALL RELATIONS ARE
FUNCTIONS

USE VERTICAL LINE TEST TO
KNOW IF IT IS A FUNCTION

FUNCTIONS
IN
ALPHABET
FUNCTION!
H
FUNCTION!
I
FUNCTION!
L
FUNCTION!
T
FUNCTION!
U
FUNCTION!
V
REAL LIFE FUNCTIONS:
WHEN WILL I EVER USE THIS?
Location as a function of time. You can never be in two places at the same time. If you were to plot the graphs of where
two people are as a function of time,
the place where the lines cross means that
the two people meet each other at that time.
This idea is used in logistics, an area of
mathematics that tries to plan where
people and items are for businesses.
Money as a function of time. You never have more than one amount of money at any time because you can always add everything to give one total amount. By understanding how your money changes over time, you can plan to spend your money sensibly. Businesses find it very useful to plot the graph of their money over time so that they can see when they are spending too much.
Temperature as a function of various factors.
Temperature is a very complicated function
because it has so many inputs, including:
the time of day, the season, the amount of clouds in the sky, the strength of the wind, where you are and many more. But the important thing is that there is only one temperature output when you measure it in a specific place.
FUNCTIONS ALSO ALLOW US TO VISUALIZE RELATIONSHIPS
IN TERMS OF GRAPHS, WHICH ARE MUCH EASIER TO READ
AND INTERPRET THAN LIST OF NUMBERS
NOW, WE HAVE FINALLY LEARNED