HP Prime Graphing NW280AAABA manual Add some calculations, AbscissaGB,slopeGC

Add some calculations

point B (referred to as GB in Symbolic view) and the later is to constrained to the slope of C (referred to as GC in Symbolic view).

19.You should have point() on the entry line. Between the parentheses, add:

abscissa(GB),slope(GC)

You can enter the commands by hand, or choose them from one of two Toolbox menus: App > Measure, or Catlg.

20.Tap .

The definition of your new point is added to Symbolic view. When you return to Plot view, you will see a point named D and it will have the same x- coordinate as point B.

21.Press P.

If you can’t see point D, pan until it comes into view. The y coordinate of D will be the derivative of the curve at point B.

Since its difficult to read

coordinates off the screen, we’ll add a calculation that will give the exact derivative (to three decimal places) and which we can display in Plot view.

22.Press M.

Numeric view is where you enter calculations.

23.Tap .

24.Tap and choose Measure > slope

25.Between parentheses, add the name of the tangent,

namely GC, and tap .

Notice that the current slope is calculated and displayed. The value here is dynamic, that is, if the slope of the

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