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If the equation represents a hyperbola, find the center, foci, and asymptotes. If the equation represents an ellipse, find the center, vertices, and foci. If the equation represents a circle, find the center and radius. If the equation represents a parabola, find the focus and directrix.
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Q16: <span class="ql-formula" data-value="\mathrm { r } ^
Q45: The spiral <span class="ql-formula" data-value="r
Q69: <span class="ql-formula" data-value="\sum _ { n =
Q84: <span class="ql-formula" data-value="\text { The upper half
Q102: Find the point on the parabola
Q127: <span class="ql-formula" data-value="\text { Determine whether or
Q184: <span class="ql-formula" data-value="y = - 4"><span class="katex-display"><span
Q201: An ellipse centered at the origin
Q271: <span class="ql-formula" data-value="16 x^{2}-9 y^{2}=144"><span class="katex"><span class="katex-mathml"><math
Q346: Find the foci and asymptotes of