HSC Stuff > HSC Mathematics Advanced

Locus and parabola

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lozil:

--- Quote from: RuiAce on September 19, 2016, 09:51:30 pm ---Well there comes a requirement to break down the question and try to draw out what's relevant at the time.

Let's try an example question. Provide one.

--- End quote ---

And questions like "Point P moves so that PA^2 + PB^2 = 4 where A = (3,-1) and B = (-5,4). Find the equation of the locus of P."

RuiAce:

--- Quote from: lozil on September 19, 2016, 09:59:00 pm ---I guess it just varies with the question... like I always get confused with competing the square ones (e.g. find the focus of X^2 + 6x - 12y - 3 = 0). I know how to do them, I just get confused with all the numbers under exam conditions

--- End quote ---

RuiAce:

--- Quote from: lozil on September 19, 2016, 10:05:23 pm ---And questions like "Point P moves so that PA^2 + PB^2 = 4 where A = (3,-1) and B = (-5,4). Find the equation of the locus of P."

--- End quote ---

lozil:

--- Quote from: RuiAce on September 19, 2016, 10:09:11 pm ---



--- End quote ---

Ok thanks. I guess I've just got to do lots of practice (especially under exam conditions!) Can't believe HSC is only 3 weeks away  :( :(

jamonwindeyer:

--- Quote from: lozil on September 19, 2016, 10:14:06 pm ---Ok thanks. I guess I've just got to do lots of practice (especially under exam conditions!) Can't believe HSC is only 3 weeks away  :( :(

--- End quote ---

We're here to help you every step of the way!! ;D

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