How a graph to show a function ? How function is or not in a graph? Definition vertical line ? How to find value of function through a drew graph? You can Free download And Read Best Article About Function (Mathematics) .
You can Free download And Read Best Article About Function (Mathematics) by alamdar in pdf format.
About Function:
1-How a graph to show a function ?
we know that "f "is a real valued function.The function "f"contain real numbers.
A function is defined as y=f(x)
To show that " f "have consist in the coordinate plane (x,y).The coordinates plane (x,y) such as Ordered Pair form in function "f ".
2-How a function is or not in graph ?
Ordered pair (x,y)through ,we determined a function is or not in a graph.
- If vertical line cross a graph more than one point (in second figure ) .then graph show that it is not function "f ".
Vertical line :
Those lines which goes to straight up or straight down and parallel to Y-axis.
If vertical line cross a graph only one point in ( first figure ).
3-How to find value of function through a drew graph ?
To see that the drew graph .The graph are many points in this function " f ".these points are in ordered pair like as (x,y).Then we easily find point(value) of function " f ".
4- Through Distance Formula:
There are two points contain in this graph.
X=x1,x2,x3,x4
Y=y1,y2,y3,y4.
=ㄏ⅀(x1-y1)⏻2
Note:)⏻ is square root.
in this formula,we find distance the value of function " f ".
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