1 / 12

Bell Work:

Bell Work:. Evaluate each expression: 1. 4 2 2. (-2) 3 3. (1/2) 3 4. 2 * 1.05 3 5. 3 4 * 3 3. Answers:. 1. 16 2. -8 3. 1/8 4. 2.205 5. 2187. 8.2 – Zero and Negative Exponents. Goal:. I can evaluate powers that have zero and negative exponents.

tede
Télécharger la présentation

Bell Work:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Bell Work: • Evaluate each expression: • 1. 42 • 2. (-2)3 • 3. (1/2)3 • 4. 2 * 1.053 • 5. 34 * 33

  2. Answers: • 1. 16 • 2. -8 • 3. 1/8 • 4. 2.205 • 5. 2187

  3. 8.2 – Zero and Negative Exponents Goal: • I can evaluate powers that have zero and negative exponents.

  4. , where a is not equal to 0. Zero and Negative Exponents Zero and negative exponents are too easy. DEFINITION OF NEGATIVE EXPONENTS a-n is the reciprocal of an. What this really means is that you turn a negative exponent into a positive exponent by shifting the power from numerator to denominator or vice versa!

  5. Example What this really means is that you turn a negative exponent into a positive exponent by shifting the power from numerator to denominator or vice versa! Important – only move the base number and the negative exponent that goes with it!

  6. Examples a. 3-4 = b. 4-y = c. d. 0-1 =

  7. Zero and Negative Exponents Zero and negative exponents are too easy. DEFINITION OF ZERO EXPONENTS A nonzero number to the zero power has the value of ONE. ANY NUMBER (except zero!) RAISED TO THE ZERO POWER IS ONE!!!! a0 = 1, where a is not equal to 0. 970 = 1 50 = 1 1000 = 1 -40 = 1 80 = 1 7650 = 1 3000 = 1 -220 = 1 -90 = 1 19870 = 1 1,000,0000 = 1 22.8790 = 1 1,5670 = 1

  8. b. More Examples – Rewrite with positive exponents. Assume k is positive. a. 4(3-k) =

  9. More Examples – Evaluate the Expression a. b. (5-2)-3 = c. 2-3 =

  10. b. Examples – Rewrite with positive exponents. Assume n is positive. a. (4y)-3 =

  11. How do you graph an exponential function? To sketch the graph of y = 2x, make a table of values that includes negative x values…… Next, plot the points on a coordinate plane. What do you notice about the graph? Safety tips….. Use integer values for x. Base number should always be greater than zero (in this class). In real life applications, x is usally the time period.

  12. Review Assignment: Page 459 14 - 48 even

More Related