Borui Academy

🎓 CSCA Math · 留学生考中国大学数学

12 units · 60 topics · ~50% MCQ exam · drawn from real Jan/Dec CSCA papers

12 audio 12 images 12 chapters
  1. Ch 1

    Sets & Inequalities

    集合与不等式 · roster/builder/interval · sign-chart method · monotonicity comparisons

    Set notation, union/intersection/subset, linear/quadratic/rational/absolute-value inequalities, and the powers-vs-logs comparison trick. The single highest-frequency CSCA topic.

    1 1
  2. Ch 2

    Functions and Their Properties

    函数及其性质 · domain · odd/even · monotonicity · inverse · composition

    Function definitions and the four core properties tested heavily on CSCA: domain/range, parity, monotonic intervals, and inverses.

    1 1
  3. Ch 3

    Elementary Functions

    基本初等函数 · power · exponential · logarithmic · quadratic · translations

    The standard function families and how their graphs transform under shifts and scales.

    1 1
  4. Ch 4

    Trigonometric Functions

    三角函数 · radians · identities · reduction formulae · sum/diff · double/half angle

    The single biggest CSCA topic by question count. Memorise the reduction-formula mnemonic and the sum/difference identities.

    1 1
  5. Ch 5

    Sequences

    数列 · arithmetic · geometric · recursive · sum techniques

    Arithmetic and geometric sequences plus the four classic sum techniques (错位相减, 裂项相消, etc.).

    1 1
  6. Ch 6

    Plane Vectors

    平面向量 · operations · dot product · collinearity · coordinate form

    Vectors as algebraic objects and as geometric arrows. Dot product reveals angles and perpendicularity.

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  7. Ch 7

    Lines in the Plane

    平面直线 · slope · inclination · 4 forms · distance · intersection

    Four equivalent line equations, parallel/perpendicular conditions, and the distance formula.

    1 1
  8. Ch 8

    Circles

    圆 · standard form · general form · tangent · chord

    Standard and general equations of a circle; how to find tangent lines and analyse a circle-line relationship.

    1 1
  9. Ch 9

    Conic Sections

    圆锥曲线 · ellipse · hyperbola · parabola · eccentricity · focal properties

    The three conics and their focal-radius identities. Eccentricity unifies them.

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  10. Ch 10

    Complex Numbers

    复数 · algebraic form · conjugate · modulus · arithmetic

    Complex arithmetic, conjugate-multiply division trick, geometric interpretation in the complex plane.

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  11. Ch 11

    Counting & Probability

    计数与概率 · counting principles · permutations · combinations · classical probability

    Permutations, combinations, classical probability, independent events.

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  12. Ch 12

    Statistics

    统计 · mean · variance · frequency distributions

    Descriptive statistics, variance/standard deviation, frequency histograms.

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