Math Problem Statement

Evaluate the following expressions based on the functions h(x) = log₃(x + 3) - 2, g(x) given by the graph, and f(x) given by the table: A. (g ⋅ h⁻¹)(1) B. (h + f⁻¹)(0) C. (f ⋅ g⁻¹ ⋅ h)(0).

Solution

Let's carefully evaluate the given expressions step by step. The provided functions are:

  1. h(x)=log3(x+3)2h(x) = \log_3(x + 3) - 2
  2. g(x)g(x) from the graph.
  3. f(x)f(x) from the table.

A. (gh1)(1)(g \cdot h^{-1})(1)

  1. gh1(1)g \cdot h^{-1}(1) means we first find h1(1)h^{-1}(1) (inverse of hh at 1) and then substitute into gg.

Step 1: Solve h(x)=1h(x) = 1

The equation for h(x)h(x) is: log3(x+3)2=1\log_3(x + 3) - 2 = 1 Add 2 to both sides: log3(x+3)=3\log_3(x + 3) = 3 Rewriting in exponential form: x+3=33=27    x=24x + 3 = 3^3 = 27 \implies x = 24

Thus, h1(1)=24h^{-1}(1) = 24.

Step 2: Find g(24)g(24)

From the graph of g(x)g(x), there is no information about g(24)g(24). Without more details on gg, we cannot determine g(24)g(24).


B. (h+f1)(0)(h + f^{-1})(0)

This involves h(0)h(0) and f1(0)f^{-1}(0):

Step 1: Find h(0)h(0)

Substitute x=0x = 0 into h(x)h(x): h(0)=log3(0+3)2=log3(3)2h(0) = \log_3(0 + 3) - 2 = \log_3(3) - 2 Since log3(3)=1\log_3(3) = 1, we have: h(0)=12=1h(0) = 1 - 2 = -1

Step 2: Find f1(0)f^{-1}(0)

From the table, f(x)=0f(x) = 0 when x=3x = 3. Therefore: f1(0)=3f^{-1}(0) = 3

Step 3: Add h(0)h(0) and f1(0)f^{-1}(0)

h(0)+f1(0)=1+3=2h(0) + f^{-1}(0) = -1 + 3 = 2


C. (fg1h)(0)(f \circ g^{-1} \circ h)(0)

Here we evaluate h(0)h(0), then g1g^{-1}, and finally ff.

Step 1: Find h(0)h(0)

From part B: h(0)=1h(0) = -1

Step 2: Find g1(1)g^{-1}(-1)

From the graph of g(x)g(x), g(x)=1g(x) = -1 when x=2x = 2. Thus: g1(1)=2g^{-1}(-1) = 2

Step 3: Find f(2)f(2)

From the table of f(x)f(x), f(2)=1f(2) = -1. Therefore: f(g1(h(0)))=f(2)=1f(g^{-1}(h(0))) = f(2) = -1


Final Answers:

A. gh1(1)g \cdot h^{-1}(1): Undefined due to lack of information on g(24)g(24).
B. h+f1(0)=2h + f^{-1}(0) = 2
C. fg1h(0)=1f \circ g^{-1} \circ h(0) = -1


Do you want detailed explanations for any step? Here are 5 related questions to explore:

  1. How do we calculate the inverse of a logarithmic function like h(x)=log3(x+3)2h(x) = \log_3(x + 3) - 2?
  2. How can we read values of g(x)g(x) and its inverse g1(x)g^{-1}(x) from a graph?
  3. How do we interpret f1(x)f^{-1}(x) from a table of values?
  4. What does composition of functions, such as (fg1h)(x)(f \circ g^{-1} \circ h)(x), mean mathematically?
  5. What is the domain and range of h(x)h(x) based on its equation?

Tip:

When solving for inverse functions, remember to isolate the variable step by step and rewrite logarithmic or exponential equations clearly!

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Math Problem Analysis

Mathematical Concepts

Logarithmic Functions
Function Inverses
Function Composition
Graph Interpretation

Formulas

Inverse of logarithmic function: if h(x) = log₃(x + 3) - 2, solve for x.
Composition of functions: (f ⋅ g)(x) = f(g(x))
Inverse functions: h⁻¹(y), f⁻¹(y), and g⁻¹(y) where applicable.

Theorems

Properties of Logarithmic and Exponential Functions
Composition of Functions
Inverse Function Theorem

Suitable Grade Level

Grades 11-12