Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
junior college 2 | H2 Maths
4 Answers Below
Anyone can contribute an answer, even non-tutors.
hello can anyone help me with these 2 qns ? Thank u !
Date Posted: 3 years ago
Views: 412
the curve?????
sry the qn didnt give any curve
Nabil, there is no need for a diagram of the curve to be presented in a question. For some curves which are easier, graphs are usually not presented in a question.
Or in this case, because the expression y = ½ + sin²x is an always positive curve, the setter of the question probably intends for the student to realise this so that the shape of the graph is not required in the solving of this question.
Nevertheless, I have included a sketch of the graph on Desmos.
Or in this case, because the expression y = ½ + sin²x is an always positive curve, the setter of the question probably intends for the student to realise this so that the shape of the graph is not required in the solving of this question.
Nevertheless, I have included a sketch of the graph on Desmos.
See 4 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
We need to be careful when integrating sin^2 x. We cannot integrate this the usual way we do by raising the power by 1 and dividing by the new power.
In other words.
(sin x)^2
does not integrate to
(sin x)^3 / 3
and using the chain rule reversal
(sin x)^3 / (3 cos x)
does not work either since sin x is non-linear.
As always, my answer might be wrong.
In other words.
(sin x)^2
does not integrate to
(sin x)^3 / 3
and using the chain rule reversal
(sin x)^3 / (3 cos x)
does not work either since sin x is non-linear.
As always, my answer might be wrong.
Date Posted:
3 years ago
Thank u !!
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
In case you need the graph for Q10, here you go!
Date Posted:
3 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
A rough idea. I did not use the cover up rule as I’m not sure if you learnt it during your course of studies in Sec 3, Sec 4 and JC.
Date Posted:
3 years ago
360 Tutoring Program