1. Indefinite Integrals or Antiderivatives
You should distinguish carefully between definite and indefinite integrals. A definite integral is a number, whereas an indefinite integral is a function (or family of functions).

2. Antiderivative
An antiderivative of a function f is a function F such that
Ex.
An antiderivative of is
since

3. Indefinite Integral The expression:
read “the indefinite integral of f with respect to x,”
means to find the set of all antiderivatives of f.
x is called the variable of integration
Integrand
Integral sign

4. Constant of Integration
Every antiderivative F of f must be of the form F(x) = G(x) + C, where C is a constant.
Notice
Represents every possible antiderivative of 6x.

5. Power Rule for the Indefinite Integral, Part I
Ex.

6. Power Rule for the Indefinite Integral, Part II
Indefinite Integral of ex and bx

7. Sum and Difference Rules
Ex.
Constant Multiple Rule
Ex.

8. Table of Indefinite Integrals

9. Fundamental Theorem of Calculus (part 1)
If is continuous for , then

10. Fundamental Theorem of Calculus (part 2)
1. Derivative of an integral.
2. Derivative matches upper limit of integration.
3. Lower limit of integration is a constant.

11. Fundamental Theorem of Calculus (part 2)

12. The Fundamental Theorem of Calculus
Ex.

13. The Fundamental Theorem of Calculus
Ex.

14. First Fundamental Theorem:
1. Derivative of an integral.
2. Derivative matches upper limit of integration.
3. Lower limit of integration is a constant.

15. 1. Derivative of an integral.
2. Derivative matches upper limit of integration.
3. Lower limit of integration is a constant.

16. The upper limit of integration does not match the derivative, but we could use the chain rule.

17. The lower limit of integration is not a constant, but the upper limit is.
We can change the sign of the integral and reverse the limits.

18. Neither limit of integration is a constant.
We split the integral into two parts.
It does not matter what constant we use!
(Limits are reversed.)
(Chain rule is used.)

19. More Ex’s on the FTC