Turn on thread page Beta
    • TSR Support Team
    • Thread Starter
    Offline

    21
    ReputationRep:
    TSR Support Team
    I know that the answer can't be zero by visualising the vector field, but I'm not sure where I've gone wrong!

    Offline

    12
    ReputationRep:
    (Original post by Plagioclase)
    I know that the answer can't be zero by visualising the vector field, but I'm not sure where I've gone wrong!

    I can't claim to remember enough about this to know if your method is correct or not (no reason to think it isn't, I simply can't remember the details). But could the problem be your F.(dx/dt) line, where you appear to be claiming that sin^2 t + cos^2 t = 0?
    • TSR Support Team
    • Thread Starter
    Offline

    21
    ReputationRep:
    TSR Support Team
    (Original post by Pangol)
    But could the problem be your F.(dx/dt) line, where you appear to be claiming that sin^2 t + cos^2 t = 0?
    It's an identity though so why wouldn't that be true?
    Offline

    12
    ReputationRep:
    (Original post by Plagioclase)
    It's an identity though so why wouldn't that be true?
    Should be 1 rather than 0, surely?
    • TSR Support Team
    • Thread Starter
    Offline

    21
    ReputationRep:
    TSR Support Team
    (Original post by Pangol)
    Should be 1 rather than 0, surely?
    I'm an idiot, thanks :lol:
    Offline

    19
    ReputationRep:
    (Original post by Plagioclase)
    It's an identity though so why wouldn't that be true?
    It equals 1, not 0.
    Offline

    12
    ReputationRep:
    (Original post by Plagioclase)
    I'm an idiot, thanks :lol:
    It's always the easy stuff, isn't it? And this seems to happen more often as the complexity of the rest of the question increases...
    Offline

    19
    ReputationRep:
    (Original post by Plagioclase)
    I know that the answer can't be zero by visualising the vector field, but I'm not sure where I've gone wrong!

    damn, what level is this?
    Uni Maths?
    • TSR Support Team
    • Thread Starter
    Offline

    21
    ReputationRep:
    TSR Support Team
    (Original post by joyoustele)
    damn, what level is this?
    Uni Maths?
    It's part of my third-year geology course but I believe this is taught in first-year physics?
    Offline

    12
    ReputationRep:
    (Original post by Plagioclase)
    It's part of my third-year geology course but I believe this is taught in first-year physics?
    I'm genuinely interested in why you would need this for such a course. I'm sure that this is down to my ignorence as to what a geology degree entails, but please enlighten me!
    • TSR Support Team
    • Thread Starter
    Offline

    21
    ReputationRep:
    TSR Support Team
    (Original post by Pangol)
    I'm genuinely interested in why you would need this for such a course. I'm sure that this is down to my ignorence as to what a geology degree entails, but please enlighten me!
    Vector calculus is important for things like geodynamics and geophysical fluid dynamics!

    Edit: My course isn't actually called geology, it's just easier than explaining what Earth Sciences is.
    Offline

    11
    ReputationRep:
    (Original post by Plagioclase)
    Vector calculus is important for things like geodynamics and geophysical fluid dynamics!

    Edit: My course isn't actually called geology, it's just easier than explaining what Earth Sciences is.
    Is this Geophysics at Oxford?
    Online

    18
    ReputationRep:
    (Original post by Pangol)
    I'm genuinely interested in why you would need this for such a course. I'm sure that this is down to my ignorence as to what a geology degree entails, but please enlighten me!
    I can envisage anything where you want to calculate things like heat distributions (or gravity, for that matter) will involve you needing to be familiar with vector calculus. But yeah, I'm interested too, although I think it's likely the gory details won't have been made apparent to Plagioclase yet!
    Offline

    12
    ReputationRep:
    (Original post by Plagioclase)
    Vector calculus is important for things like geodynamics and geophysical fluid dynamics!

    Edit: My course isn't actually called geology, it's just easier than explaining what Earth Sciences is.
    Makes perfect sense, thank you. So, geology is a real science after all... (BBT ref, please don't get upset!)
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 21, 2017

University open days

  1. University of Bradford
    University-wide Postgraduate
    Wed, 25 Jul '18
  2. University of Buckingham
    Psychology Taster Tutorial Undergraduate
    Wed, 25 Jul '18
  3. Bournemouth University
    Clearing Campus Visit Undergraduate
    Wed, 1 Aug '18
Poll
How are you feeling in the run-up to Results Day 2018?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.