Math Problem Statement

f(x) = 4x + 3 g(x) = x - 2 Find g(f(-1))

Solution

To find g(f(1))g(f(-1)), we'll follow these steps:

  1. Find f(1)f(-1): Given f(x)=4x+3f(x) = 4x + 3, substitute x=1x = -1 into f(x)f(x): f(1)=4(1)+3=4+3=1f(-1) = 4(-1) + 3 = -4 + 3 = -1 So, f(1)=1f(-1) = -1.

  2. Find g(f(1))=g(1)g(f(-1)) = g(-1): Now, using g(x)=x2g(x) = x - 2, substitute x=1x = -1 into g(x)g(x): g(1)=12=3g(-1) = -1 - 2 = -3

Thus, g(f(1))=3g(f(-1)) = -3.

Would you like more details or have any questions?

Here are 5 related questions:

  1. What is g(f(x))g(f(x)) in terms of xx?
  2. Find f(g(2))f(g(2)) given the same functions.
  3. If f(x)=4x+3f(x) = 4x + 3 and g(x)=x22g(x) = x^2 - 2, what is g(f(1))g(f(1))?
  4. Find g(f(x))g(f(x)) when f(x)=2x+1f(x) = 2x + 1 and g(x)=3x5g(x) = 3x - 5.
  5. What is the inverse function of f(x)=4x+3f(x) = 4x + 3?

Tip: In composite functions, always work from the innermost function to the outermost function.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Composite Functions

Formulas

f(x) = 4x + 3
g(x) = x - 2
g(f(x))

Theorems

-

Suitable Grade Level

Grades 9-10