Question:

For $0 \leq p \leq 1$ and for any positive $a, b$ let $I(p) = (a + b)^p, J(p) = a^p + b^p$, then

Updated On: Apr 27, 2024
  • $I (p) > J (p)$
  • $I (p) \leq J (p)$
  • $I(p) < J(p)$ in $[0, \frac{P}{2} ]$ & $I(p) > J(p)$ in $[\frac{P}{2} , \infty )$
  • $I(p) < J(p)$ in $[\frac{P}{2}, \infty )$ & $J(p) > I(p)$ in $[0, \frac{P}{2}]$
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is B

Solution and Explanation

Given that; 

For any positive a,b; let \(I(p)=(a+b)^b. J(p)=a^b+b^b\)

For 0≤p≤1

Then let us take a=3 , b=4

then p=0.5

\(i(p)=5; J(p)=7\)

\(\therefore J(p)>I(p)\)

Now a= ⅓, b= ¼

when p=1

\(I(p)= \frac{7}{12}; J(p)=\frac{7}{12}\)

\(\therefore I(p)=J(p)\)

\(I(p)\)\(J(p)\)

Was this answer helpful?
0
0

Concepts Used:

Increasing and Decreasing Functions

Increasing Function:

On an interval I, a function f(x) is said to be increasing, if for any two numbers x and y in I such that x < y, 

⇒ f(x) ≤ f(y)

Decreasing Function:

On an interval I, a function f(x) is said to be decreasing, if for any two numbers x and y in I such that x < y,

⇒ f(x) ≥ f(y)

Strictly Increasing Function:

On an interval I, a function f(x) is said to be strictly increasing, if for any two numbers x and y in I such that x < y,

⇒ f(x) < f(y)

Strictly Decreasing Function:

On an interval I, a function f(x) is said to be strictly decreasing, if for any two numbers x and y in I such that x < y,

⇒ f(x) > f(y)

Graphical Representation of Increasing and Decreasing Functions