Find the volume of revolution when the curve defined by y=xe^(2x) is rotated 2*pi radians about the x-axis between x=0 and x=1

This is a standard question that may be found in a C4 mathematics paper. Students should use knowledge of the volume of revolution formula V = piint_{a}^{b} y2dx to find the expression V = piint_{0}^{1} (x2e4x) dx.
Using the integration by parts formula (below), one can yield an intermediary equation, namely V = pi*[e4/4-(1/2)int_{0}^{1} (xe4x)]. Application of the integration by parts formula again solves the second integral of xe4x, and substituting in the limits of 0 and 1 yields a final answer of: (pi/32)(5e4-1).

Integration by parts formula: int(uv') = uv - int(u'v).

HS
Answered by Hanish S. Maths tutor

3629 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

(Using the Quotient Rule) -> Show that the derivative of (cosx)/(sinx) is (-1)/(sinx).


Find the integral of 3x^2 + 4x + 9 with respect to x.


find the integral between the limits 0 and pi/2 of sin(x)cos(x) with respect to x.


How do you solve the equation e^2x - 2e^x - 3 = 0 ?


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:

© 2026 by IXL Learning