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(To find the trace using substitution) Substitute the equation for each coordinate plane (z=0, x=0, or...

(To find the trace using substitution) Substitute the equation for each coordinate plane (z=0, x=0, or y=0 one at at time) into the quadric surface equation. Simplify the equation and write it in standard form.

  1. x^2/4+y^2/9−z^2/12=1
  2. x^2/4−y^2/9−z^2/12=1
  3. x^2/4+y^2/9+z^2/12=1

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