Question about Texas Instruments TI-83 Plus Calculator
A circle is not a function and cannot be graphed in the regular y=screen. You can graph a circle in parametric mode.
To graph a circle in the regular y= screen, you have to graph it in 2 lines on the y= screen. I assume you've solved for y and gotten a square root equation. Remember a square root can be positive or negative. In line 1 of y= screen graph what you've been graphing and then graph the same equation in line 2 but with a negative in front of the equation. You'll get something that looks like an oval since the calculator screen is rectanglular. To make it look more circular (both parts aren't going to connect), press zoom and then select #5 (square).
Posted on Aug 06, 2009
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Posted on Jan 02, 2017
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