Show that an equation of the form cl + Dx = 0, c "* 0, D"*
Chapter , Problem 11.2.77(choose chapter or problem)
Show that an equation of the form cl + Dx = 0, c "* 0, D"* 0 is the equation of a parabola with vertex at (0, 0) and axis of symmetry the x-axis. Find its focus and directrix.
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