수학 공식
대수, 기하학, 삼각법 및 미적분의 필수 공식
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FAQ
What is the quadratic formula used for?
The quadratic formula solves any quadratic equation of the form ax² + bx + c = 0. It gives you the x-values where the parabola crosses the x-axis.
When do I use the Law of Cosines vs Law of Sines?
Use Law of Cosines when you know: (1) all three sides (SSS), or (2) two sides and the included angle (SAS). Use Law of Sines when you know: (1) two angles and one side, or (2) two sides and an angle opposite one of them.
What is the difference between derivatives and integrals?
Derivatives measure the rate of change (slope) of a function. Integrals calculate the accumulated area under a curve. They are inverse operations of each other.
How do I remember trigonometric ratios?
Use SOH-CAH-TOA: Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.
