Free collection of tests in arithmetic, pre-algebra, algebra, trigonometry, hyperbolic trig and calculus together with step-by-step solutions and extensive reference material, including definitions and formulations and proofs of used formulas and theorems. An interactive training technique trains your problem-solving skills.

54806 solved algebraic inequalities arranged by complexity and solution methods. Simple linear inequalities and problems of extra complexity such as fractional inequalities. Comprehensive explaining material available in two languages. Proofs of used theorems and formulas. Special options to develop didactic materials, variant tests and lesson plans. MathML support.