Differentiate y =cos^4(x)

Let u = cos xdu/dx = -sin xy = u4dy/du = 4u3dy/dx = dy/du * du/dx = (4u3 ) * (-sin x) = 4 cos 3 x * -sin x = -4 cos 3 x sin x

CK
Answered by Christiyan K. Maths tutor

3950 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the simultaneous equations: 2x+2y=12 x-y=8 You must show your working


Simultaneous questions: 2x+y=7, 3x-y=8


Prove that the composite function fg(2)=-26 where f(x)=3x+1 and g(x)=1-5x


Prove that the difference between the squares of two consecutive odd numbers is a multiple of 8.


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