Determine the Domain: Tackle (10x-3)/(5x-3) in Rational Function Analysis

Look at the following function:

10x35x3 \frac{10x-3}{5x-3}

What is the domain of the function?

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Does the function have a domain? And if so, what is it?
00:03 To find the domain, remember that division by 0 is not allowed
00:07 So let's see what solution zeros the denominator
00:11 Let's isolate X
00:23 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Look at the following function:

10x35x3 \frac{10x-3}{5x-3}

What is the domain of the function?

2

Step-by-step solution

To find the domain of the function 10x35x3\frac{10x-3}{5x-3}, we'll follow these steps:

  • Identify the denominator: B(x)=5x3B(x) = 5x - 3.
  • Set the denominator equal to zero: 5x3=05x - 3 = 0.
  • Solve for xx: Add 3 to both sides, getting 5x=35x = 3. Then, divide by 5: x=35x = \frac{3}{5}.
  • Conclude that the domain is all real numbers except x=35x = \frac{3}{5}, since this makes the denominator zero.

Therefore, the domain of the function is all real numbers except x35 x\ne\frac{3}{5} .

3

Final Answer

x35 x\ne\frac{3}{5}

Practice Quiz

Test your knowledge with interactive questions

Given the following function:

\( \frac{5-x}{2-x} \)

Does the function have a domain? If so, what is it?

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