Math  /  Algebra

QuestionGraph the function and its inverse using a graphing calculator. Use an inverse drawing feature, if available. Find the domain and the range of ff and of f1f^{-1}. f(x)=(4x+12)3f(x)=(4 x+12)^{3}

Studdy Solution

STEP 1

1. The function f(x)=(4x+12)3 f(x) = (4x + 12)^3 is given.
2. We need to graph the function and its inverse.
3. We need to find the domain and range of both f f and f1 f^{-1} .

STEP 2

1. Graph the function f(x) f(x) .
2. Determine the inverse function f1(x) f^{-1}(x) .
3. Graph the inverse function f1(x) f^{-1}(x) .
4. Find the domain and range of f(x) f(x) .
5. Find the domain and range of f1(x) f^{-1}(x) .

STEP 3

To graph f(x)=(4x+12)3 f(x) = (4x + 12)^3 , input the function into a graphing calculator.
Observe the shape of the graph, which is a cubic function that has been horizontally shifted and vertically scaled.

STEP 4

To find the inverse, start by setting y=(4x+12)3 y = (4x + 12)^3 .
Solve for x x in terms of y y : y1/3=4x+12 y^{1/3} = 4x + 12 4x=y1/312 4x = y^{1/3} - 12 x=y1/3124 x = \frac{y^{1/3} - 12}{4}
Thus, the inverse function is: f1(x)=x1/3124 f^{-1}(x) = \frac{x^{1/3} - 12}{4}

STEP 5

To graph f1(x)=x1/3124 f^{-1}(x) = \frac{x^{1/3} - 12}{4} , input the inverse function into the graphing calculator.
If available, use the inverse drawing feature to verify the graph.

STEP 6

The domain of f(x)=(4x+12)3 f(x) = (4x + 12)^3 is all real numbers, R \mathbb{R} , because any real number can be input into a cubic function.
The range of f(x) f(x) is also all real numbers, R \mathbb{R} , because a cubic function can output any real number.

STEP 7

The domain of f1(x)=x1/3124 f^{-1}(x) = \frac{x^{1/3} - 12}{4} is all real numbers, R \mathbb{R} , because any real number can be input into the cube root function.
The range of f1(x) f^{-1}(x) is also all real numbers, R \mathbb{R} , because the cube root function can output any real number.
The domain and range of f(x) f(x) are both R \mathbb{R} .
The domain and range of f1(x) f^{-1}(x) are both R \mathbb{R} .

Was this helpful?

Studdy solves anything!

banner

Start learning now

Download Studdy AI Tutor now. Learn with ease and get all help you need to be successful at school.

ParentsInfluencer programContactPolicyTerms
TwitterInstagramFacebookTikTokDiscord