Thomas Chang's answer to grace tan's Secondary 3 A Maths Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
1) sub line into curve and make sure one side is zero
2) find discriminant
3) find if discriminant is > or <0 or =0
4) if >0 will intersect curve at 2 pts, if =0 will intersect at 1 pt, and <0 will not touch curve at all
2) find discriminant
3) find if discriminant is > or <0 or =0
4) if >0 will intersect curve at 2 pts, if =0 will intersect at 1 pt, and <0 will not touch curve at all
Date Posted:
4 years ago
sorry i think you missed out the -5 in step 2?
Haha, indeed, thanks for spotting
360 Tutoring Program