Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 4 | A Maths
3 Answers Below
Anyone can contribute an answer, even non-tutors.
Hi, can you help me with Q7? Thank you! :)
Date Posted: 4 years ago
Views: 217
See 3 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Good evening Irah! Here are my workings for Q7. Part ii can also be done by the shoelace method.
Date Posted:
4 years ago
Irah, let me know if you need help for the other two questions as well
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Good evening Irah! Here are my workings for Q8.
Date Posted:
4 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Good evening Irah! Here are my workings for Q9.
Date Posted:
4 years ago
Hi Mr Eric, thanks for helping me with the other 2 qns. Even though I eventually find out how to do Q7 on my own, but I just double-checked my method with your solution.
For Q9 (iii), I asked my teacher about it too. But when he said use the original equation (that is ax^2 + 5x + a - 5) and just discriminate it, I was quite confused.
Because I did like what you did above (substitute y=x-2 into ax^2 + 5x + a - 5), I don’t know if what my teacher mentioned can also be one of the ways to solve this qn.
For Q9 (iii), I asked my teacher about it too. But when he said use the original equation (that is ax^2 + 5x + a - 5) and just discriminate it, I was quite confused.
Because I did like what you did above (substitute y=x-2 into ax^2 + 5x + a - 5), I don’t know if what my teacher mentioned can also be one of the ways to solve this qn.
Good morning Irah! I’m pretty sure by discriminant he actually meant for you to simul the equations first. It is meaningless to do discriminant on that equation ax2 + 5x + a - 5 alone because the question wants us to find out the values of a for which the line y = x - 2, and not y = 0, is a tangent to the curve.
360 Tutoring Program