If y=cos(3x)cosec(4x), find dy/dx.

Use the product rule: Let   u = cos3x ,     v = cosec4x Then du/dx = -3sin3x , dv/dx = -4cosec4xcot4x  (standard result, given in the formula booklet) Hence dy/dx = -4cosec4xcot4xcos3x - 3sin3xcosec4x . (No simplification required as it was not asked for in the question)

Answered by Pria D. Maths tutor

4052 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

Find the coordinates of the minimum point on the curve: y = x^2 - x - 2


Find the first three terms in the expansion of (4-x)^(-1/2) in ascending powers of x.


Differentiate 3x^2 + 4x - 7


What actually are sin, cos and tan?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences