Get the numbers right
Science and math · Page 3
Work with equations, shapes, quantities and measurements.
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- Vector calculatorAdd and subtract matching vector components, then find their dot product and magnitudes.
- Vector magnitude calculatorVector magnitude is the square root of the sum of squared components.
- Vector projection calculatorThe projection of u onto v is ((u · v) ÷ (v · v)) × v.
- Vector subtraction calculatorSubtract each component of the second vector from the matching first-vector component.
- Vertex form calculatorConvert ax² + bx + c into a(x − h)² + k, where h = −b/(2a) and k = c − b²/(4a).
- Volume calculatorRectangular box volume = length × width × height. Surface area = 2 × (length × width + length × height + width × height).
- Wattage calculatorElectrical power = voltage × current.
- Wave speed calculatorWave speed = frequency × wavelength.
- Weighted decision matrixCompare options by a weighted mean: score = Σ(criterion score × weight) ÷ Σweights.
- X y intercepts calculatorFind the intercepts of the line Ax + By = C by setting y or x to zero.
