Core 4 help please

Hello can u help me with question 7 please?
So far I've expanded to produce :
1-2sin3x+sin^2(3x)

I can intergrate the first two but I'm clueless in how to intergrate sin^2(3x)

Reply 1

JP2015

sin^2 3x = 1/2(1-cos 6x) where before sin^2 x = 1/2(1-cos 2x) you times the 2x by the 3

Quick Reply

Related discussions

Self studying A levels help
Evaluation points OCR psychology
is 4 months too late to get the grades i want?
UCL BASc Arts and Sciences 2023 offer holders
biomedical science to medicine what should I do
Edexcel A2 Biology Mind Maps For All Units/Topics
please help with the preparation 😭💗
What topic are you on at school in Further maths yr 12?
Should I do 3 A levels instead of BTEC Computing National*Extended Diploma Level 3?
EPQ and Core Maths, right choice?
What happens if you fail your KCL retake exams?
Will a GCSE in maths hold me back?
The LPC - your questions answered!
Computer Science, Uni, University, Maths
Should I do 3 A levels instead of BTEC Computing National*Extended Diploma Level 3?
Trampoline Exercises That Will Challenge Your Body
Nursing with foundation years
Sixth form subject
NHS Healthcare scientist assistant job interview advice?
Caribbean Medical School placements in the UK