CSCA MathematicsChapter 1: Sets, Logic & InequalitiesIntermediate
Quadratic, Fractional Inequalities & AM-GM
一元二次不等式、分式不等式与基本不等式 · Node 1.2
Root-sign method for polynomials, fractional transformation $\frac{f(x)}{g(x)} > 0 \iff f(x)g(x) > 0$, and arithmetic-geometric mean inequality $a+b \ge 2\sqrt{ab}$.
Chapter Weight: 25% of official examination
Practice This NodeCore Mathematical Axiom
Formula Proof & TrapsCSCA Exam Trap Alert
Multiplying both sides of an inequality by an algebraic denominator without knowing its sign.