Curved surface FP2
Watch this threadPage 1 of 1
Skip to page:
Bobjim12
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
http://filestore.aqa.org.uk/subjects...W-QP-JUN11.PDF
Question 5.
I'm sitting on S = 2πy∫√(1 +x^2/(x^2+8))
And i'm struggling to get to what they want me to show.
Help pls
Question 5.
I'm sitting on S = 2πy∫√(1 +x^2/(x^2+8))
And i'm struggling to get to what they want me to show.
Help pls
0
reply
Zacken
Badges:
22
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report
#2
(Original post by Bobjim12)
http://filestore.aqa.org.uk/subjects...W-QP-JUN11.PDF
Question 5.
I'm sitting on S = 2πy∫√(1 +x^2/(x^2+8))
And i'm struggling to get to what they want me to show.
Help pls
http://filestore.aqa.org.uk/subjects...W-QP-JUN11.PDF
Question 5.
I'm sitting on S = 2πy∫√(1 +x^2/(x^2+8))
And i'm struggling to get to what they want me to show.
Help pls


0
reply
Bobjim12
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
(Original post by Zacken)
I'm very alarmed by the fact that you have the
outside the integral sign... correct version:
I'm very alarmed by the fact that you have the


0
reply
Zacken
Badges:
22
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#4
Report
#4
(Original post by Bobjim12)
i can never tell when we can just ignore the minus root, in this case y has two values............ this makes me sad.
i can never tell when we can just ignore the minus root, in this case y has two values............ this makes me sad.
In either case - y is inside the integral!
0
reply
Bobjim12
Badges:
20
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#5
(Original post by Zacken)
It would have made no difference had you taken the negative root - you'd get a negative area from which (I hope) you'd take the absolute value of to get the positive answer anyway. But at A-Level, you're nearly always going to be taking the positive root without any justification.
In either case - y is inside the integral!
It would have made no difference had you taken the negative root - you'd get a negative area from which (I hope) you'd take the absolute value of to get the positive answer anyway. But at A-Level, you're nearly always going to be taking the positive root without any justification.
In either case - y is inside the integral!
ok ty

0
reply
X
Page 1 of 1
Skip to page:
Quick Reply
Back
to top
to top