Jiayang's answer to Sonia's Secondary 4 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Jiayang
Jiayang's answer
1883 answers (Tutor Details)
1st
I don't understand wym by the "differentiation" method :/
Sonia
Sonia
4 years ago
Like i bring the power to the front ...


sin2(x/3) =

2sin(x/3)(-cos(x/3)) =

-2sin(x/3)


I brought the power 2 to the front then i integrate sin -> -cos
Jiayang
Jiayang
4 years ago
For trig you can integrate sin, cos and sec². Anything else you see you'll have to use your trig identities and convert them sin, cos, sec².
Sonia
Sonia
4 years ago
Ahh i see.. Thank youu