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1 Introductory Algebra Exponents & Scientific Notation.

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Presentation on theme: "1 Introductory Algebra Exponents & Scientific Notation."— Presentation transcript:

1 1 Introductory Algebra Exponents & Scientific Notation

2 2 Exponents & Scientific Notation Integer Exponents Scientific Notation Power Rules

3 3 Integral Exponents & Scientific Notation

4 4 Positive Integral Exponents

5 5 Negative Integral Exponents

6 6 If a is any nonzero real number and n is a positive integer, then a -n = 1/a n. (Note that a negative exponent is not the same or related to a negative number.)

7 7 Negative Integral Exponents If a is any nonzero real number and n is a positive integer, then a -n = 1/a n. (Note that a negative exponent is not the same or related to a negative number.)

8 8 Negative Integral Exponents If a is any nonzero real number and n is a positive integer, then a -n = 1/a n. (Note that a negative exponent is not the same or related to a negative number.)

9 9 Negative Integral Exponents If a is any nonzero real number and n is a positive integer, then a -n = 1/a n. (Note that a negative exponent is not the same or related to a negative number.)

10 10 Product Rule for Exponents

11 11 Product Rule for Exponents

12 12 Product Rule for Exponents

13 13 Zero Exponents

14 14 Zero Exponents

15 15 Changing the Sign of an Exponent a n and a -n are reciprocals, therefore a -n = (1/a n ) and (1/a -n ) = a n

16 16

17 17

18 18 Scientific Notation Format:a × 10 n × used for multiplication n an integer Example:2 × 10 3 = 2,000

19 19 Scientific Notation Examples 5,280 = ?.14159 = ?

20 20 Scientific Notation Examples 5,280 = 5.28 × 10 3.14159 = 1.4159 × 10 -1

21 21 Converting Standard to Scientific 1. Count the number of places (n) that the decimal point must be moved so that it will follow the first nonzero digit of the number. 2. If the original number was larger than 10, use 10 n. 3. If the original number was smaller than 1, use 10 -n.

22 22 Converting Scientific to Standard 1. Determine the number of places to move the decimal point by examining the exponent on the 10. 2. Move to the right for a positive exponent and to the left for a negative exponent.

23 23 Multiplication Example (2,000,000) (0.0000000008) ( 2 × 10 6 ) ( 8 × 10 -10 ) = (2)(8)(10 6 )(10 -10 ) = 16 × 10 -4 = 1.6 × 10 -3 = 0.0016 Scientific Notation is designed for multiplication and division, not addition and subtraction.

24 24 Light from the Sun Distance to the sun ~ 93,000,000 miles Speed of light ~ 186,000 miles per second Find how long it takes for the light from the sun to reach the earth.

25 25 Light from the Sun Distance to the sun ~ 93,000,000 miles Speed of light ~ 186,000 miles per second Find how long it takes for the light from the sun to reach the earth.

26 26 Light from the Sun Distance to the sun ~ 93,000,000 miles Speed of light ~ 186,000 miles per second Find how long it takes for the light from the sun to reach the earth.

27 27 Light from the Sun Distance to the sun ~ 93,000,000 miles Speed of light ~ 186,000 miles per second Find how long it takes for the light from the sun to reach the earth.

28 28 Warm-ups

29 29 The Power Rules

30 30 Power of a Power Rule

31 31 Power of a Power Rule

32 32 Power of a Power Rule

33 33 Power of a Product

34 34 Power of a Product

35 35 Power of a Product

36 36 Power of a Quotient

37 37 Power of a Quotient

38 38 Power of a Quotient

39 39 Variable Exponents

40 40 Variable Exponents

41 41 Integral Exponents

42 42 Warm-ups

43 43 Next Slide Show


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