Finding Antiderivatives
In Exercises 1–16, find an antiderivative for each function. Do as many as you can mentally. Check your answers by differentiation.
2 - 5 / x²

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Identify the function to find the antiderivative of: $2 - \frac{5}{x^2}$.

Rewrite the function to make integration easier: $2 - 5x^{-2}$.

Recall the power rule for antiderivatives: For $x^n$, the antiderivative is $\frac{x^{n+1}}{n+1} + C$, provided $n \neq -1$.

Integrate each term separately: The antiderivative of $2$ is \$2x$, and the antiderivative of $-5x^{-2}$ is $-5 \times \frac{x^{-1}}{-1}$.

Combine the results and add the constant of integration $C$: $2x + 5x^{-1} + C$.

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주요 개념

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Antiderivatives (Indefinite Integrals)

An antiderivative of a function is another function whose derivative equals the original function. Finding antiderivatives involves reversing differentiation, often represented as indefinite integrals with a constant of integration, C, since differentiation loses constant terms.

Power Rule for Integration

The power rule for integration states that the integral of x^n (where n ≠ -1) is (x^(n+1)) / (n+1) plus a constant C. This rule is essential for integrating polynomial terms and functions expressed as powers of x.

Verification by Differentiation

After finding an antiderivative, differentiating it should return the original function. This step confirms the correctness of the antiderivative and helps identify any missing constants or errors in integration.

Finding AntiderivativesIn Exercises 1–16, find an antiderivative for each function. Do as many as you can mentally. Check your answers by differentiation.2 - 5 / x²