Graph the quadratic function f(x) = - 4x - 40x-84. Give the (a) vertex, (b) axis, (c) domain, and (d) range. Then determine (e) the largest open interval of the domain over which the function is increasing and (f) the largest open interval over which the function is decreasing. %3D
Graph the quadratic function f(x) = - 4x - 40x-84. Give the (a) vertex, (b) axis, (c) domain, and (d) range. Then determine (e) the largest open interval of the domain over which the function is increasing and (f) the largest open interval over which the function is decreasing. %3D
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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The given function can also be written as . This equation is similar to the general equation of a parabola. Therefore, comparing it with the general equation of the parabola , we get that the vertex of this function is .
Comparing the above equation with the general equation of the parabola, we get the axis of the parabola as the line .
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