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In this section, we delve into the concepts of antiderivatives and indefinite integrals, which are essential to calculus. We will explore reverse differentiation operations, introducing the concept that if ( f'(x) = g(x) ), then ( f(x) ) is an antiderivative of ( g(x) ). The notation for indefinite integrals will also be defined, and we will discuss the importance of arbitrary constants. Various examples and applications will clarify these ideas, demonstrating the linear properties of antiderivatives and providing practice opportunities for upcoming quizzes.
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MAT 1234Calculus I Section 3.9 Antiderivatives http://myhome.spu.edu/lauw
Homework • WebAssign HW 3.9 • Monday Quiz – 3.8, 3.9
Tomorrow • 9.4
Preview • Introduce antiderivatives • Introduce the notations from section 4.4 (Indefinite integral)
Reverse Operation of Differentiation f’(x)=g(x) g(x) is thederivative of f(x) f(x) is anantiderivative of g(x)
Example 1 is the derivative of is an antiderivative of
Example 1 is the derivative of functions of the form
Q: Is it possible… is the derivative of functions of the form
Example 1 The most general antiderivative The antiderivative of is of the form Arbitrary constant
Notation (Indefinite Integral) The notation always comes in pair.
Notation If the independent variable is in u, then the differential is du
Notation Always use parentheses if there is a sum/difference
Formal Definition If then
Formula where k is a constant Why?
Formula Verify
Formula (Linear Property) where k is a constant
Example 3 Tradition
Example 9 If and , find .