Math Problem Statement

Find the function values for f(-2), f(0), and f(3). The function is f(x) = 3^x + x.

Solution

The function provided is f(x)=3x+xf(x) = 3^x + x, and we are asked to find the values for f(2)f(-2), f(0)f(0), and f(3)f(3).

Step-by-step solutions:

  1. For f(2)f(-2): f(2)=32+(2)f(-2) = 3^{-2} + (-2) 32=132=193^{-2} = \frac{1}{3^2} = \frac{1}{9} So, f(2)=192=19189=179f(-2) = \frac{1}{9} - 2 = \frac{1}{9} - \frac{18}{9} = \frac{-17}{9} Therefore, f(2)=179f(-2) = \frac{-17}{9}.

  2. For f(0)f(0): f(0)=30+0=1+0=1f(0) = 3^0 + 0 = 1 + 0 = 1 Therefore, f(0)=1f(0) = 1.

  3. For f(3)f(3): f(3)=33+3=27+3=30f(3) = 3^3 + 3 = 27 + 3 = 30 Therefore, f(3)=30f(3) = 30.

Summary of the values:

  • f(2)=179f(-2) = \frac{-17}{9}
  • f(0)=1f(0) = 1
  • f(3)=30f(3) = 30

You can now place these values into the corresponding boxes.

Do you need more details on the calculations or any further explanation?

5 Related Questions:

  1. How do you evaluate exponential functions for negative exponents?
  2. What are the properties of exponents that help simplify expressions like 323^{-2}?
  3. How would the function change if the exponent had a variable like x2x^2?
  4. Can the function f(x)=3x+xf(x) = 3^x + x ever be undefined? Why or why not?
  5. How do we determine the asymptotic behavior of exponential functions as xx approaches infinity?

Tip:

Always check whether the base of an exponent is positive or negative, as it can change the overall result when raising to negative powers.

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Math Problem Analysis

Mathematical Concepts

Exponential Functions
Substitution in Functions

Formulas

f(x) = 3^x + x

Theorems

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Suitable Grade Level

Grades 8-10