Question about Texas Instruments TI-84 Plus Silver Edition Graphic Calculator

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Parametric Graphing of Inverse Functions

When I attempt to graph a function and it's inverse in parametric mode


X1: Tsquared + T

Y1: T

X2: T

Y2: Tsquared + T


The calc only graphs both equations in Quadrant I.  They both should be parabolas

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Re: Parametric Graphing of Inverse Functions

See carefully captured images below





Posted on Mar 26, 2016

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Re: Parametric Graphing of Inverse Functions

If your looking to make a parabola out of it add



Those functions are not parabolas. since T² cannot be negative since negative times negative = positive. (unless it's an imaginary number, but thats a different story)

Posted on Feb 08, 2008

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However if you are drawing functions in Funct mode you can draw the inverse of the function that has been graphed.
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[2nd][Draw][8: DrawInv] [ENTER]
The command appears on the home screen, and you need to tell it the function it will act on. To do so press
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and select the function you want, say Y1, if Y1 has already been defined.

DrawInv Y1 [ENTER]
Both Y1 and its inverse will be drawn.

Hope it helps.

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