Question
upstudy study bank question image url

Score: 0 of 3 points Given function \( f(x)=8 x^{p}-6 \), which integer values of \( p \) in range \( [2,6] \) make the function one-to-one. Answer all values, separated by commas. Example: \( 1,2,3 \).

Ask by Barber Craig. in the United States
Jan 24,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

\( p = 3, 5 \)

Solution

Sign in to Unlock Answers for Free!

A Learning Platform Trusted by Millions of Real Students and Teachers.

star-icon Unlock

Reviewed and approved by the UpStudy tutoring team

Extra Insights

To determine the integer values of \( p \) in the range \( [2,6] \) that make the function \( f(x) = 8x^p - 6 \) one-to-one, we need to analyze the behavior of the function based on the exponent \( p \). A function is one-to-one if it is either strictly increasing or strictly decreasing. This is typically guaranteed if the derivative does not change sign. The derivative of \( f(x) \) is given by: \[ f'(x) = 8p x^{p-1} \] - For \( p = 2 \): \( f'(x) = 16x \), which is zero at \( x = 0 \), thus not one-to-one (increasing on \( x > 0 \) and decreasing on \( x < 0 \)). - For \( p = 3 \): \( f'(x) = 24x^2 \), which is always non-negative and only equals zero at \( x = 0 \). This still fails the one-to-one test when considering the entire set of real numbers. - For \( p = 4 \): \( f'(x) = 32x^3 \), which has the same issue as \( p = 2 \) (horizontal inflection at \( x = 0 \)). - For \( p = 5 \): \( f'(x) = 40x^4 \), like \( p = 3 \) and \( p = 4 \), this becomes non-negative and isn’t one-to-one across all \( x \). - For \( p = 6 \): \( f'(x) = 48x^5 \), showing the same behavior as previous odd exponents. From the analysis, the function is one-to-one only when \( p \) is in the form of an odd integer \( > 1 \). Thus: The integer value of \( p \) in the range \( [2, 6] \) that makes the function one-to-one is \( 3, 5 \). Final Answer: \( 3, 5 \)

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy