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EXPONENTIAL FUNCTIONS 10.1

EXPONENTIAL FUNCTIONS 10.1. The equation of an exponential function:. The function is continuous and one-to-one domain: set of real numbers. range: If a > 0: all positive numbers If a < 0: all negative numbers horizontal asymptote: x-axis

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EXPONENTIAL FUNCTIONS 10.1

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  1. EXPONENTIAL FUNCTIONS10.1

  2. The equation of an exponential function: • The function is continuous and one-to-one • domain: set of real numbers. • range: • If a > 0: all positive numbers • If a < 0: all negative numbers • horizontal asymptote: x-axis • The graph contains the point (0, a), where a is the y-intercept. • 5. The graphs of are reflections across the y-axis.

  3. Exponential Growth & Decay • If b>1, the function represents exponentialgrowth. • If0<b<1, the function represents exponential decay.

  4. Sketch the graph of . Then state the function’s domain and range. Example 1-1a Example 1 x –2 –1 0 1 2

  5. Example 1-1a Example 2 Sketch and find the domain and range. x –2 –1 0 1 2

  6. Determine whether each function represents exponential growth or decay. a. b. c. d. Example 1-2d Example 3

  7. Example 4 Write an exponential function whose graph passes through the points (0,3) and (1,15)

  8. Example 5 Write an exponential function whose graph passes through the given points: (0,-5) and (-3,-135)

  9. Simplify . Simplify . Example 1-4a Example 6

  10. Solve . Solve . Example 1-5a Example 7

  11. Solve each equation. Example 1-5d Example 8

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