How can I draw a 3D sphere in CalcPlot3D?

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I am trying to draw a 3D sphere in CalcPlot3D but am unable to do so.

I am inputting z = sqrt(1 - x^2 - y^2), but am seeing nothing.

enter image description here

How can I draw a 3D sphere in CalcPlot3D?

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Using the link you've provided, I see the hemisphere corresponding to the equation you inputted. I've gone and added the other hemisphere to complete the sphere: enter image description here

Maybe try:

  • Refreshing the page.
  • Inserting a new function via the "Select..." dropdown box.
  • Checking and unchecking the blue tick next to the equation.