The graph in the
represents the function ![F(x)=[x]-3](/tpl/images/0399/4170/9abdf.png)
Further explanation:
The function is given as follows:
![F(x)=[x]-3](/tpl/images/0399/4170/9abdf.png)
Label the above equation as follows:
(1)
In the above equation
represents a greatest integer function.
Greatest integer function
is a function which is an integral part of any real number
.
If
is an integer than
is also the same integer and if
is in decimals than the value of
is the next smallest integer.
For example: If
than
and if
than ![[x]=-3](/tpl/images/0399/4170/2938f.png)
Figure 1 (attached in the end) indicates the graph of the function
.
The function is
and the interval is given as
.
Substitute
in equation (1).
![\begin{aligned}F(-3)&=[-3]-3\\&=-3-3\\&=-6\end{aligned}](/tpl/images/0399/4170/04df5.png)
Substitute
in equation (1).
![\begin{aligned}F(-2.5)&=[-2.5]-3\\&=-3-3\\&=-6\end{aligned}](/tpl/images/0399/4170/2225b.png)
From the above calculation it is concluded that for each value of
in the interval
the value of the function
is
.
Substitute
in equation (1).
![\begin{aligned}F(-2)&=[-2]-3\\&=-2-3\\&=-5\end{aligned}](/tpl/images/0399/4170/45f51.png)
Substitute
in equation
.
![\begin{aligned}F(-1.5)&=[-1.5]-3\\&=-2-3\\&=-5\end{aligned}](/tpl/images/0399/4170/494b4.png)
From the above calculation it is concluded that for each value of
in the interval
the value of the function
is
.
Similarly, the value of the function
in the interval
and
are
and
respectively.
Substitute
in equation (1).
![\begin{aligned}F(3)&=[3]-3\\&=3-3\\&=0\end{aligned}](/tpl/images/0399/4170/1c0ac.png)
Only for
the value of the function
is
.
The value of the function for different value of
lying in different intervals is given in the table attached in the end of the solution.
Option A:
From the graph given in the option A it is observed that the value of the function
in the interval
is
which is incorrect because as per the table 1 (attached in the end) the value of the function in the interval
is
.
This implies that the option A is incorrect.
Option B:
From the graph given in the option B it is observed that the value of the function
in the interval
is
which is incorrect because as per the table 1 (attached in the end) the value of the function in the interval
is
.
This implies that the option B is incorrect.
Option C:
From the graph given in the option C it is observed that the value of the function
for all the values of
in the interval
is
, in the interval
is
, in the interval
is
and so on.
The value of the function as observed from the graph in option C for different intervals is exactly same as the calculation made above.
This implies that option C is correct.
Option D:
As per the our calculation the value of the function
in the interval
is
.
But from the graph in option D it is observed that for all value of
in the interval
the value of the function is
which is not correct.
This implies that option D is incorrect.
Therefore, the graph in the
represents the function
.
Learn more:
1.A problem on composite function
2.A problem to find radius and center of circle
3.A problem to determine intercepts of a line
Answer details:
Grade: High school
Subject: Mathematics
Chapter: Functions
Keywords: Functions, greatest integer function, floor function, domain , range, intervals, equation, graph, curve, relation, F(x)=[x]-3, [x], smallest integer function, ceiling function.
![Which graph represents the function on the interval [-3 , 3] ? f(x)= [x]-3](/tpl/images/0399/4170/c6874.jpg)
![Which graph represents the function on the interval [-3 , 3] ? f(x)= [x]-3](/tpl/images/0399/4170/9bd42.jpg)