Any help would be much appreciated!!

Nazzy_HCrest

Could someone please help me on these questions! Thanks in advance!! calculus 3 help.png

Reply 1

TeeEm

Original post by Nazzy_HCrest

Could someone please help me on these questions! Thanks in advance!! calculus 3 help.png

surface
x = a sinθ cosφ
y = a sinθ sinφ
x = a cosθ

it should be obvious what the polar equation would be in the form r=...

dS is a standard result
are you meant to quote it?
show geometrically?
or use a Jacobian to get it?

Any good so far?

Reply 2

Nazzy_HCrest

Fantastic! I think quoting it should be sufficient! Thank you! Do you reckon you can help me with part (b) and (c) ? Once again, I would be extremely grateful! I am just under a lot of pressure at the moment! Thanks so much!

Original post by TeeEm

Reply 3

TeeEm

Original post by Nazzy_HCrest

r=a

well

ds= a² sinθ dθ dφ

any standard multivariable book would show that

do you know how to find a unit normal on your surface?

Reply 4

Nazzy_HCrest

yes, the surface normal would be P(phi,theta).. i think

Original post by TeeEm

r=a

well

ds= a² sinθ dθ dφ

any standard multivariable book would show that

do you know how to find a unit normal on your surface?

Reply 5

TeeEm

Original post by Nazzy_HCrest

yes, the surface normal would be P(phi,theta).. i think

use grad in Cartesian

(I do not remember grad in SPC)

Reply 6

Nazzy_HCrest

still having trouble.. any chance you can give me a solution (b) and (c) ?? Thank you.

Original post by TeeEm

use grad in Cartesian

(I do not remember grad in SPC)

Reply 7

TeeEm

Original post by Nazzy_HCrest

still having trouble.. any chance you can give me a solution (b) and (c) ?? Thank you.

when do you need the question by?

Reply 8

Nazzy_HCrest

I need to hand it in by wednesday 6pm. Even if I can get just a solution for part (b), that would be great! Thank you for your help so far!

Original post by TeeEm

when do you need the question by?

Reply 9

TeeEm

Original post by Nazzy_HCrest

I need to hand it in by wednesday 6pm. Even if I can get just a solution for part (b), that would be great! Thank you for your help so far!

I will try to help you tomorrow lunchtime (I have a 2 hour break 13.30 to 15.30)

At the moment I just finished a 15 hour working day and my body and brain says no

Reply 10

TeeEm

Original post by Nazzy_HCrest

I need to hand it in by wednesday 6pm. Even if I can get just a solution for part (b), that would be great! Thank you for your help so far!

are you still there?

Reply 11

Nazzy_HCrest

That is completely fine, Thank you once again! I really appreciate it!

Original post by TeeEm

I will try to help you tomorrow lunchtime (I have a 2 hour break 13.30 to 15.30)

At the moment I just finished a 15 hour working day and my body and brain says no

(edited 9 years ago)

Reply 12

TeeEm

Original post by Nazzy_HCrest

That is completely fine, Thank you once again! I really appreciate it!

I have a similar question in my website but the booklet is corrupted ...

I just fixed it and need to upload it

wait for 15 minutes

Reply 13

Nazzy_HCrest

Thank you, I will be waiting!

Original post by TeeEm

I have a similar question in my website but the booklet is corrupted ...

I just fixed it and need to upload it

wait for 15 minutes

Reply 14

TeeEm

Original post by Nazzy_HCrest

Thank you, I will be waiting!

Try this link

http://madasmaths.com/archive_maths_booklets_advanced_topics.html

download file

vector_integrals

look at page 20 for a very similar question

See if it helps

Reply 15

Nazzy_HCrest

This is PERFECT!! Very Helpful! Thank you so much; you have saved me from being deregistered from my course! I will pray for you!

Original post by TeeEm

Try this link

http://madasmaths.com/archive_maths_booklets_advanced_topics.html

download file

vector_integrals

look at page 20 for a very similar question

See if it helps