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équations deux inconnues

Données de référence et informations techniques sur équations deux inconnues pour les applications mathématiques.

equationstwounknowns

Overview

Engineering reference data for Equations Two Unknowns in mathematics.

Key Formulas

Quadratic Formula

x=b±b24ac2ax = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

Roots of ax² + bx + c = 0.

Pythagorean Theorem

c2=a2+b2c^2 = a^2 + b^2

Right triangle relationship.

Circle Area

A=πr2A = \pi r^2

Area of a circle.

Logarithm

logb(x)=ln(x)ln(b)\log_b(x) = \frac{\ln(x)}{\ln(b)}

Change of base formula.

Variables

Symbol Description Unit
π\pi Pi 3.14159...
ee Euler's number 2.71828...

References