Find the derivative of y=e^(2x)*(x^2-4x-2).

Notice that y can be expressed as y=f(x)g(x), in which f(x)=e^(2x) and g(x)=x^2-4x-2.Through the product rule, we know that dy/dx=f'(x)g(x)+f(x)g'(x).Through the chain rule, we can solve f(x) by rewriting in the form f=e^u, u=2xf'(x)=df/du * du/dxf('x)=e^u * 2f'(x)=2e^(2x)We solve g(x) by simply differentiating a polynomial function with degree 2, i.e. given the term ax^b we replace it with abx^(b-1)g'(x)=2x-4Therefore, dy/dx = 2e^(2x)(x^2-4x-2) + e^(2x)*(2x-4).

SH
Answered by Samuel H. Maths tutor

8838 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Differentiate y = lnx + 4x^2 + 3e^4x with respect to x


Express 3/2x+3 – 1/2x-3 + 6/4x^2-9 as a single fraction in its simplest form.


A line runs between point A(5,9) and B(11,1). Find the equation of the line. Point C lies on the line between A and B. The line with equation 2y=3x+12 also crosses through point C. Find the x coordinate of Point C.


Given that f(x) = (x^2 + 3)(5 - x), find f'(x).


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