Can you post some examples of the sort of questions you are struggling with and your current thought process with these questions?
This would make it much easier to help .
Coming to a close to my prelim year, extension maths generally went alright but the I still don't get parametrics... any tricks to these?
Until now I figured that there's a bunch of subsititutions to do, but how do you recognise them?
Can you post some examples of the sort of questions you are struggling with and your current thought process with these questions?
This would make it much easier to help .
Just do more questions parametrics is legit the same process every single time
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Yeah parametrics will pretty much ask you the same thing especially for Year 11 3U (e.g. equation of tangent, normal etc.)
Just remember that if its a tangent or normal question to differentiate the equation and then sub in the x-coordinate of the point in question to find the gradient and then use point gradient formula from there.
Other questions they can ask (from memory) is normally just asking you to prove that certain lines are parallel (show that they have same gradient) and that certain lines are equal (you can use distance formula). They can also ask you stuff on focal chords - just remember that pq=-1 for focal chords for your typical parabola. This is all from memory so I might be wrong.
2017 HSC: Eng (Adv.) · 3U Math · 4U Math · Chem · Phys · Bio
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Buy my books/notes cheaply here!
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Uni Course: Actuarial Studies and Statistics at MQ -- PM me if you have questions
2017 HSC Subjects: Eng Adv / 3u+4u Maths / Bio /Phys
ATAR: 99.75
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