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    Substitutions in inequalities

    Hi, How do substitutions in inequalities work. What's stopping me from making the sub of p=p/1+p, q=q/1+q etc into this http://snag.gy/b2B8i.jpg
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    limits

    Then if a limit actually approaches 0 or infinity how would you know when to stop manipulating?
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    limits

    http://tutorial.math.lamar.edu/Classes/CalcI/LimitsAtInfinityI_files/eq0034M.gif http://tutorial.math.lamar.edu/Classes/CalcI/LimitsAtInfinityI_files/eq0020M.gif How do we know for the second one that we can plug in the limit without any manipulation Is there some rule saying when you can and...
  4. O

    limits

    As in when can you "sub" in the limit For example what's stopping you from subbing in to get 0
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    limits

    Hi When doing limits when are you allowed to apply the condition? Also why is a cusp discontinuous Thanks
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    orbital velocity formula

    How do we explain why an object in orbit will move further out when the velocity increases?
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    orbital velocity formula

    How is orbital velocity related to radius Do v=2πr/t. And v=√Gm/r. Contradict?
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    what direction is escape velocity defined in?

    Hi Is escape velocity defined as vertically upwards? If so how does it fit in with newtons cannon thought experiment? Thanks
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    Official BOS Trials 2013 Mathematics Papers: Parramatta Library.

    4U please :D
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    Does taking either up or down as positive change the answer in mechanics?

    Hi, When doing a mechanics question e.g. where a particle is falling, Would taking either up as positive or down as positive change the answer because you will be using different limits? I know the equation you get for acceleration would be the same but would the equation for velocity or...
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    Actuarial Studies

    Not in Uni yet but looking to do actuarial studies
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    Actuarial Studies

    Yes please :D, Can i PM you some questions about co-op?
  15. O

    Actuarial Studies

    Do you guys know where i can have a look what you learn in first year so i can get a better feel for the course? online textbooks etc. ? Also, is it very different to extension 2 maths?
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    Cadetships 2013 thread

    I think staying up till one during year 12 is more because you left your work really late as opposed to the large workload you get as a cadet?
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    Basic question about chain rule

    ohhh thanks so much :D
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    Basic question about chain rule

    then what about something like differentiating y=sin(x^2) is that still chain rule? Btw the question didn't say to use chain rule, i was just wondering why you couldn't use it.
  20. O

    Basic question about chain rule

    Hi, Why can't you use the chain rule for differentiating y=(x+1)^x to find dy/dx? Thanks
  21. O

    How much do investment bankers earn??

    What Are some of these other jobs ? Thanks
  22. O

    worked solution for 4unit patel

    interested in this too
  23. O

    What jobs for com/law or Eco/law ?

    What fields or jobs do com/law or Eco/law students generally go into after graduation? Thanks
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