a. Find the coordinates of the vertex of the parabola y = ax 2 + bx +

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a. Find the coordinates of the vertex of the parabola y = ax2 + bx + c, a ≠ 0.

b. When is the parabola concave up? Concave down? Give reasons for your answers.

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Thomas Calculus Early Transcendentals

ISBN: 9780321884077

13th Edition

Authors: Joel R Hass, Christopher E Heil, Maurice D Weir

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