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    Math Ext 1 Predictions/Thoughts

    For that, you had to do: which was not what I did. I realised like 10 minutes after I left the exam that I fucked up that question. I should've known that there was more to a three marker than 4 lines -.- For the quartic sums and products of roots question, I got 1/2. Product of roots was 6...
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    Math Ext 1 Predictions/Thoughts

    Without the paywall:
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    Maths Ext 2 Predictions/Thoughts

    I got a = 5, since the centre of motion is x = 3. What I did was integrate the acceleration function and evaluated the constant using the condition x = 0, v = 8. I got: v^2 = -4x^2 + 24x + 64 I then set RHS = 0, and got after dividing through: (x+2)(x-8) = 0 in which I said the particle...
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    Will I ever find love?

    As a 26 year old, the best chances you have would be to get off a forum with a user-base predominantly consisting of 17-18 year old high-schoolers.
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    Trig Help

    The question in your original post is Question 7A of Exercise 12.2 ["Further Solution of Trigonometric Equations"] from the New Senior Mathematics Advanced textbook. Example 10 from the same exercise tackles a similar style question:
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    Trig Help

    The first approaches that come to mind for me here are T formulae and aux angle but those approaches are out of question as this was posted in the Advanced forum. Square both sides of the equation and use the Pythagorean identity to get a quadratic in terms of sine or cosine. Solve said...
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    Prove that the angle inscribed in a semi-circle is a right angle using Vector Methods.

    The derivation shown in the video uses Euclidean geometry instead of vectors. I also prefer his approach, but given how OP wanted a vector based approach the question I posted should be content.
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    Simple Harmonic Q Help please

    Start off with differentiating x = b + 2b cos (nt) with respect to time until you get to acceleration. Then put acceleration in the form -n^2(x-c) to assist with substitution. From the question, when: x = 3b, |\ddot{x}| = 16 and x = 2b, |\dot{x}| = 4\sqrt3 Substitute the conditions into the...
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    Miscellaneous resisted motion question

    Particle A decelerates, apologies. I'll update the original post.
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    Miscellaneous resisted motion question

    "Particle A and Particle B are travelling along a straight line at constant speeds v_{a} and v_{b} respectively. Particle A is behind Particle B, but is travelling faster. When Particle A is exactly D metres behind Particle B, Particle A begins decelerating at k ms^-2. 1. Using calculus, find...
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    Compound angle

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    Difficult induction question, or maybe I'm just missing something simple?

    Not gonna lie, you psyched me out by saying it was "simple", because after investing all my willpower over figuring out how to rearrange 3^{4k+2}-1 such that it is in the form 8M for all integers M I resorted to using a second case of induction like you did. If there is an easier method to this...
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    mod A Keats and Campion question help

    I have the opposite problem! I have a lot more evidence for Keats poems but have little evidence from the film.. what evidence do you use when discussing the film?
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    eng advanced small q

    For those doing Keats: What evidence do you guys use for the film? I've got most of the poems done but I'm struggling to find evidence we can use when talking about the film.
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    english and eco chats

    Just for the record, there will be around 5-6 comprehension questions this year (with at least 3 common from English Standard) according to the new 2021 exam specifications meaning that there shouldn't be any 6-7-8 mark questions thankfully! Knowing this I expect a large amount of 3-4-5 mark...
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    for this one, do i make it into double angle formula first or do i do something else?

    I know you've figured out the question OP but for those curious of an alternative approach: Disclaimer: There might be some minor errors here in regard to what is defined and what is undefined.
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