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  1. B

    Syllabus development

    What is your expectation of the syllabus?
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    2005 Draft HSC MX1 Solutions By phoenix88

    I have analyses the last question ery clearly and it really understandable, if any one interested Pm me.
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    05, 04 answers?!?!

    Do you want my hand written solutions? The answeres are absolutely right but I have done them.
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    help appreciated with these questions!

    13. dy/dx=-3x^2+ 4x-5 delta is less than o and -3 is less than o so the derivative graph is always below the x axis that meants it is monotonic decreasing (b) as x goes to negative infinity, y goes to positive infinity so when you are looking at the curve from left side, the curve comes down...
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    help appreciated with these questions!

    (a) dy/dx=6x^2-6x+ 5 delta<0 (b) 6>0 and discriminant is negative so your derivative graph is always above the x-axis (c) since there is no maxima and minima point and dy/dx>0 for all real x that means the curve is monotonic increasing and cuts the x-axis once does not come down to cut the...
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    Extenion 1 tricks

    I started a thread to share the tricks that we know. I know a limited number of tricks. Tricks in maxima and minima problems: if h(x)=c/f(x) then mininimizing h(x) is the same as maximizing f(x) and vice versa if y=V^2(x) then maximizing or minimizing v is the same as maximizing or...
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    School assessment

    I already have included my marks. does any body know what mark do i need to get in the HSc to be in band 6?
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    3u Mathematics Marathon V 1.1

    Answer: _ A _ E _ I _ O _ U _ as you can see there are 6 _s so the first consonant can go in any of the 6 places, the second go to any 7 places, the third consonants go to any 8 places, the forth consonant can go to any 9 places hence the total number of arrangements is 6.7.8.9=9p4=3024
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    School assessment

    what about if i am the only one doing 4 unit. I do not know my overal assessment marks but 1 st 88 2nd 69 3 rd 96 4 th 68
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    Conics!!!

    Do you get 2/3 x^2+y^2=2
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    geometry proofs by induction

    can anyone please explain how we prove geometry results by induction? I have seen the solution for this question but i do not understand it. question: prove by induction that the sum of exterior angles of a n-sided polygon is 360.
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    3u Mathematics Marathon V 1.1

    question: all the letters of the word FACETIOUS are arranged in a line, find the total number of arrangement that contain all the vowels in the order AEIOU but not necessarily together?
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    3u Mathematics Marathon V 1.1

    is there any possibility to have geometry proofs by induction in HSC?
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    3u Mathematics Marathon V 1.1

    I looked at this solution. this solution is excellent but I have a shorter solution and I thought You might like this: let n be an even integer. we consider (1+x)^n and (1-x)^n (1+x)^n=1+nc1 x+nc2 x^2+nc3 x^3+...+ncn x^n (1-x)^n=1-nc1 x+nc2 x^2-nc3 x^3+...+ncn x^n (1+x)^n-(1-x)^n=2{nc1 x+...
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    COMBINATIon question

    If 3 points are collinear, then you will not be able to make a triangle; you can make a straight line.
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