Idiomatic

  • Chuffing hell
  • Talk a ship to scrap
  • Mathematical

    Calculus

    When $$ ax^2 + bx + c = 0, x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$ In Binomial expansion: $$ ^n C_r = \frac{n!}{r!(n-r)!}$$

    Geometry

    $$\frac{1}{2}$$ and $$ \pi$$

    Number

    $$ \infty \notin \mathbb{R}$$

    Physical

    An impulse of a force: $$ Impulse = F\Delta t $$

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