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Calculus / English

Integrals AKA Antiderivatives EXPLAINED with Examples

Ace Tutors · YouTube · 4:03

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Understand indefinite integration as finding a family of antiderivatives rather than one original function.

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Chapters

0:19Reverse a known derivative1:34Constants disappear on differentiation3:24Check the whole family

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Differentiating x³ gives 3x². Finding an antiderivative asks for a function whose derivative is the given integrand.

The functions x³, x³+2 and x³+100 share the same derivative. An indefinite integral therefore includes an arbitrary constant C.

The antiderivative family of 3x² on a connected interval is x³+C. Differentiating any member verifies the answer; a definite integral additionally uses specified bounds.

Knowledge cards

01

Reverse a known derivative

Differentiating x³ gives 3x². Finding an antiderivative asks for a function whose derivative is the given integrand.

02

Constants disappear on differentiation

The functions x³, x³+2 and x³+100 share the same derivative. An indefinite integral therefore includes an arbitrary constant C.

03

Check the whole family

The antiderivative family of 3x² on a connected interval is x³+C. Differentiating any member verifies the answer; a definite integral additionally uses specified bounds.

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  • Antiderivatives ExplanationAt 0:19
    Why this connection?

    Differentiating x³ gives 3x². Finding an antiderivative asks for a function whose derivative is the given integrand. The functions x³, x³+2 and x³+100 share the same derivative. An indefinite integral therefore includes an arbitrary constant C. The antiderivative family of 3x² on a connected interval is x³+C. Differentiating any member verifies the answer; a definite integral additionally uses specified bounds.