Parabola Calculator
Parabola Vertex Focus Calculator Formulas |
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1. Focus X = -b/2a 2. Focus Y = c - (b2 - 1)/4a 3. Vertex X = -b/2a 4. Directrix Y = c - (b2 + 1)/4a 5. X Intercept = -b/2a ± √(b * b - 4ac)/2a,0 |
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Parabola equation and graph with major axis parallel to y axis. If a>0, parabola is upward, a<0, parabola is downward. If the major axis is parallel to the x axis, interchange x and y during your calculation.
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Segment of a Parabola Calculator
Segment of a Parabola Formulas |
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1. Area = 2 * h * b; 2. Arc Length = sqrt(b2 + 16 * h2)/2 + b2 * ln((4 * h + sqrt(b2 + 16 * h2))/b)/(8*h) |
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