Parabola Directrix Calculator

The directrix is a fixed line used in describing a curve or surface. This curve can be a parabola. Here is a simple online Directrix calculator to find the parabola focus, vertex form and parabola directrix. In this below online Parabola focus directrix calculator just enter the input values in the form of a standard equation, y = ax2 + bx + c to get the result. Use our free online Parabola calculator to solve your academic mathematical and engineering problems.

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The directrix is a fixed line used in describing a curve or surface. This curve can be a parabola. Here is a simple online Directrix calculator to find the parabola focus, vertex form and parabola directrix. In this below online Parabola focus directrix calculator just enter the input values in the form of a standard equation, y = ax2 + bx + c to get the result. Use our free online Parabola calculator to solve your academic mathematical and engineering problems.

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Formula:

x = - b / 2a y = c - ( ( b2 - 1) / 4a) u = - b / 2a v = ax2 + bx + c d = c - ( ( b2 + 1) / 4a) Where, a = X2 Coefficient b = X Coefficient c = Constant x = Parabola Focus x-coordinate y = Parabola Focus y-coordinate u,v = Vertex Form d = Parabola Directrix

All the parabola directrix calculations can be made in easier and quicker manner by using this Parabola directrix calculator.


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