Math Problem Statement

For each of the following logarithmic functions, write the coordinates of the five points that have y-values of -2, -1, 0, 1, 2. (a) y = log_2(x) (b) y = log_10(x)

Solution

The question asks to find the coordinates of the points (x,y)(x, y) for two logarithmic functions, given yy-values of 2,1,0,1,2-2, -1, 0, 1, 2. Let's solve it step by step.

Part (a): y=log2xy = \log_2x

The equation y=log2xy = \log_2x can be rewritten as: x=2yx = 2^y

Now, calculate xx for each yy-value:

  1. y=2y = -2: x=22=14x = 2^{-2} = \frac{1}{4}
  2. y=1x=21=12y = -1\: x = 2^{-1} = \frac{1}{2}
  3. y=0y = 0: x=20=1x = 2^0 = 1
  4. y=1y = 1: x=21=2x = 2^1 = 2
  5. y=2y = 2: x=22=4x = 2^2 = 4

Coordinates for y=log2xy = \log_2x: (14,2),(12,1),(1,0),(2,1),(4,2)\left(\frac{1}{4}, -2\right), \left(\frac{1}{2}, -1\right), (1, 0), (2, 1), (4, 2)


Part (b): y=log10xy = \log_{10}x

The equation y=log10xy = \log_{10}x can be rewritten as: x=10yx = 10^y

Now, calculate xx for each yy-value:

  1. y=2y = -2:

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Math Problem Analysis

Mathematical Concepts

Logarithmic Functions
Exponential Functions

Formulas

y = log_b(x) implies x = b^y
Exponential and logarithmic relationships

Theorems

Logarithmic-Exponential Relationship Theorem

Suitable Grade Level

Grades 9-11