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Light Reflection & Ray Diagram Formulae
Science1. Mirror Formula: 1/f = 1/v + 1/u 2. Magnification m = -v/u = h'/h 3. Focal length f = R/2 4. Real images are inverted and formed in front of concave mirrors.
Quadratic Formula & Discriminant Derivation
MathematicsGeneral Quadratic Equation: ax^2 + bx + c = 0 Quadratic Formula: x = (-b ± √(b^2 - 4ac)) / (2a) Discriminant D = b^2 - 4ac determines root nature: - D > 0: Two distinct real roots - D = 0: Two equal real roots - D < 0: No real roots (Imaginary)
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