What is the integral of dx?
Understand the Problem
The question is asking for the indefinite integral of the function 1 with respect to x, which is a foundational concept in calculus.
Answer
$$ x + C $$
Answer for screen readers
The indefinite integral of the function 1 with respect to $x$ is:
$$ x + C $$
Steps to Solve
- Identify the integral to be solved
We need to find the indefinite integral of the function 1 with respect to $x$. This can be written as:
$$ \int 1 , dx $$
- Apply the integral rule
The integral of a constant function like 1 is straightforward. The rule states that:
$$ \int k , dx = kx + C $$
where $k$ is a constant, and $C$ is the constant of integration.
- Substitute the constant
Since $k$ is 1 in our case, we substitute $1$ for $k$:
$$ \int 1 , dx = 1 \cdot x + C $$
- Simplify the expression
This simplifies to:
$$ x + C $$
The indefinite integral of the function 1 with respect to $x$ is:
$$ x + C $$
More Information
The result $x + C$ represents a family of linear functions where $C$ is any real number. This shows that the slope of the function is constant, and the function is a straight line at a vertical distance of $C$ from the x-axis.
Tips
- Forgetting to include the constant of integration $C$. Every indefinite integral must include this constant since the process of integration can yield an infinite number of functions differing by a constant value.
- Misunderstanding the integral symbol. Some might confuse indefinite with definite integrals, where limits are specified, resulting in a specific numerical answer without the constant of integration.
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