Maintenance script: Automated superscript correction

2016-02-24T22:22:22Z

Automated superscript correction

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	The DrawInv command draws the inverse of a curve in terms of X. Its single argument is an expression in terms of X.		The DrawInv command draws the inverse of a curve in terms of X. Its single argument is an expression in terms of X.

	For example, DrawInv X^^2^^ will draw the inverse of the equation Y=X^^2^^. The inverse reverses the variables X and Y, so that the curve X=Y^^2^^ will be graphed.		For example, DrawInv X<sup>2</sup> will draw the inverse of the equation Y=X<sup>2</sup>. The inverse reverses the variables X and Y, so that the curve X=Y<sup>2</sup> will be graphed.

	You can also think of this as graphing the expression but with X representing the vertical direction, and Y representing the horizontal.		You can also think of this as graphing the expression but with X representing the vertical direction, and Y representing the horizontal.

Maintenance script: Initial automated import

2016-02-24T18:01:32Z

Initial automated import

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{{Template:TI-BASIC:Command
|picture=DRAWINV.GIF
|summary=Draws the inverse of a curve in terms of X.
|syntax=DrawInv ''curve''
|location=Press:
# 2nd DRAW to access the draw menu.
# 8 to select DrawInv, or use arrows and ENTER.
|compatibility=TI-83/84/+/SE
|size=1 byte
}}

The DrawInv command draws the inverse of a curve in terms of X. Its single argument is an expression in terms of X.

For example, DrawInv X^^2^^ will draw the inverse of the equation Y=X^^2^^. The inverse reverses the variables X and Y, so that the curve X=Y^^2^^ will be graphed.

You can also think of this as graphing the expression but with X representing the vertical direction, and Y representing the horizontal.

DrawInv requires the calculator to be in [[TI-BASIC:Func|Func]] mode, and is affected by the [[TI-BASIC:Connected|Connected]]/[[TI-BASIC:Dot|Dot]] setting.

= Advanced Uses =

DrawInv will update X and Y for each coordinate drawn (like [[TI-BASIC:Drawf|DrawF]] and [[TI-BASIC:Tangent|Tangent(]]), and exit with the last coordinate still stored.

When evaluating the expression using DrawInv, the calculator will ignore the following errors: [[TI-BASIC:Errors#datatype|ERR:DATA TYPE]], [[TI-BASIC:Errors#divideby0|ERR:DIVIDE BY 0]], [[TI-BASIC:Errors#domain|ERR:DOMAIN]], [[TI-BASIC:Errors#increment|ERR:INCREMENT]], [[TI-BASIC:Errors#nonrealans|ERR:NONREAL ANS]], [[TI-BASIC:Errors#overflow|ERR:OVERFLOW]], and [[TI-BASIC:Errors#singularmat|ERR:SINGULAR MAT]]. If one of these errors occurs, the data point will be omitted.

For this reason, DrawInv can sometimes behave in an unexpected fashion: for example, it doesn't throw an error for list or matrix expressions (it won't graph anything, either).

= Error Conditions =

* '''[[TI-BASIC:Errors#mode|ERR:MODE]]''' is thrown if the calculator is not in [[TI-BASIC:Func|Func]] mode when using DrawInv.

= Related Commands =

* [[TI-BASIC:Drawf|DrawF]]
* [[TI-BASIC:Tangent|Tangent(]][[Category:TI-BASIC]]
[[Category:TIBD]]

TI-BASIC:Drawinv - Revision history

Maintenance script: Automated superscript correction

Maintenance script: Initial automated import