What is greater e^pi or pi^e?

Let a^b >b^a, then blna>alnb, (lna)/a > (lnb)/b, Thus we graph the function (lnx)/x, We can see that this tends towards 0 as x tends towards infinity. We can also see that it is increasing from x=0 to a certain value of x. We can then find the maximum value of our function by finding the derivative. By using the product rule and setting our derivative to 0, we find x=e. Therefore (lne)/e>(lnb)/b for any b>0. Thus blne>elnb, e^b>b^e e^pi>pi^e

QED

Answered by Maths tutor

3298 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

How do you integrate (x/(x+1)) dx without using substitution.


Differentiate e^x^2


Find the two real roots of the equation x^4 -5=4x^2 Give the roots in an exact form.


Express 9^(3x+1) in the form 3^y, giving "y" in the form "ax+b" where "a" and "b" are constants.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning