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

3180 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Find the integral of 4sqrt(x) - 6/x^3.


Differentiate(dx) xy+4y-13


Given that f(x) = x^2 (3x - 1)^(1/2) find f'(x)


In a geometric series, the first and fourth terms are 2048 and 256 respectively. Calculate r, the common ratio of the terms. The sum of the first n terms is 4092. Calculate the value of n.


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