Math Problem Statement

Graph the exponential function f(x) = (3/2)(3^x). Plot five points on the graph of the function.

Solution

This is a problem asking you to graph the exponential function:

f(x)=32(3)xf(x) = \frac{3}{2} \cdot (3)^x

Steps to Solve:

  1. Understand the formula:

    • This is an exponential growth function where the base is 33 and the coefficient is 32\frac{3}{2}.
  2. Generate Points:

    • To graph this, choose several xx-values (e.g., -2, -1, 0, 1, 2) and calculate f(x)f(x).

Calculations:

f(x)=323xf(x) = \frac{3}{2} \cdot 3^x

  • For x=2x = -2: f(2)=3232=3219=16f(-2) = \frac{3}{2} \cdot 3^{-2} = \frac{3}{2} \cdot \frac{1}{9} = \frac{1}{6}
  • For x=1x = -1: f(1)=3231=3213=12f(-1) = \frac{3}{2} \cdot 3^{-1} = \frac{3}{2} \cdot \frac{1}{3} = \frac{1}{2}
  • For x=0x = 0: f(0)=3230=321=32=1.5f(0) = \frac{3}{2} \cdot 3^0 = \frac{3}{2} \cdot 1 = \frac{3}{2} = 1.5
  • For x=1x = 1: f(1)=3231=323=4.5f(1) = \frac{3}{2} \cdot 3^1 = \frac{3}{2} \cdot 3 = 4.5
  • For x=2x = 2: f(2)=3232=329=13.5f(2) = \frac{3}{2} \cdot 3^2 = \frac{3}{2} \cdot 9 = 13.5

Points to Plot:

(2,16),(1,12),(0,1.5),(1,4.5),(2,13.5)(-2, \frac{1}{6}), (-1, \frac{1}{2}), (0, 1.5), (1, 4.5), (2, 13.5)

Graph:

  • Plot these points on the graph.
  • Connect them smoothly as the curve increases exponentially for x>0x > 0 and approaches y=0y = 0 for x<0x < 0.

Would you like help with a visualization or further explanation?

Related Questions:

  1. What is the horizontal asymptote of f(x)=323xf(x) = \frac{3}{2} \cdot 3^x?
  2. How does changing the coefficient (32\frac{3}{2}) affect the graph?
  3. How does changing the base (33) affect the growth rate of the function?
  4. Can you identify the domain and range of f(x)f(x)?
  5. How would the graph change for f(x)=32(3)xf(x) = \frac{3}{2} \cdot (3)^{-x}?

Tip:

When graphing exponential functions, focus on key points like x=2,1,0,1,2x = -2, -1, 0, 1, 2 for clarity and note the rapid growth or decay!

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Math Problem Analysis

Mathematical Concepts

Exponential Functions
Graphing
Coordinate Points

Formulas

f(x) = a * b^x

Theorems

Properties of Exponential Growth

Suitable Grade Level

Grades 9-11