Chapter 8.7, Problem 1CE

To determine

Find the value of given algebraic function at the different value of x.

Answer to Problem 1CE

The solution is

  $f(x=-2,0,1,10)=\text{[-13,-7,-4,23]}$

  

Explanation of Solution

Given: The function is given

  $f(x)=3x-7$

Calculation:

The function is given

  $f(x)=3x-7$

The put the value of x into the function and get the solution

Let’s take $x=-2$ , then

  $f(x=-2)=-6-7=-13$

Similarly, we will repeat the process for all value of x the sketch a graph to show the variation of function at different x.

program:

clc
clear
close all
syms x
f=3*x-7;
a=[-2 0 1 10];
for i=1:4
    b(i)=double(subs(f,x,a(i)));
end
plot(a,b,'linewidth',1.2)
set(gca,'linewidth',1.2,'Fontsize',12)
axis square

Query:

• First, we have defined the given algebraic relation.
• Then define the value of x.
• Put the value of x into the equation and solve.
• After solving we get the solution then sketch a graph.