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  1. C

    HSC Extension 1 Mathematics Predictions / Thoughts

    Was it supposed to be that? Or was it supposed to be cos^2(2x) - sin^2(x) ?
  2. C

    HSC Extension 1 Mathematics Predictions / Thoughts

    Will i get any marks for my volume integration one? I got the right bounds but wrote it as (cos(2x) - sin(x))^2.
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