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

3742 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Using the substitution of u=6x+5 find the value of the area under the curve f(x)=(2x-3)(6x+%)^1/2 bounded between x=1 and x=1/2 to 4 decimal places.


If a particle of mass m is launched vertically upwards from the ground with velocity u m/s, how long will it take to return to the ground in terms of m, u and g?


Find all the stationary points of the curve: y = (2/3)x^3 – (1/2)x^2 – 3x + 7/6 and determine their classifications.


Find the derivative (dy/dx) of the curve equation x^2 -y^2 +y = 1.


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