4.1 ANTIDERIVATIVES & INDEFINITE INTEGRATION. Definition of Antiderivative  A function is an antiderivative of f on an interval I if F’(x) = f(x) for.

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Presentation transcript:

4.1 ANTIDERIVATIVES & INDEFINITE INTEGRATION

Definition of Antiderivative  A function is an antiderivative of f on an interval I if F’(x) = f(x) for all x in I  Note: F is called an antiderivative of f, rather than the antiderivative of f because:  F 1 (x)=x 3, F 2 (x)=x 3 – 5 and F 3 (x)=x are all antiderivatives of f(x)=3x 2

Representation of Antiderivatives  If F is an antiderivative of f on an interval I, then G is an antiderivative of f on the interval I if and only if G is of the form:  G(x) = F(x) + c, for all x in I where c is a constant

Example 1:Solving a differential  Find the general solutions of the differential equation y’=2

Notation for antiderivatives  When solving a differential equation of the form:  It is convenient to write it in the equivalent form:  dy = f(x) dx  The process of finding all solutions of this equation is called antidifferentiation (or indefinite integration)

Notation for Antiderivatives  Antidifferentiation is denoted by the integral sign:  The general solution is denoted by: Integrand Variable of Integration Constant of Integration

Basic Integration Rules Moreover. If, then

Basic Integration Rules  Look at rules on page 244

Power Rule

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8