Texas Instruments TI-92+, Список советов

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Press ENTER twice in a dialog box to save settings - Why?
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min() function - why does it not work on strings?
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Pictures in TI-92 Toolbars
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Phase Planes on the TI-92
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Verifying a symbolic result
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d() (symbolic differentiate) algorithm
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I can't get my cover (snap cover) off. How do I get it off?
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How is the application-specific 68000 different from a regular 68000?
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Graphing and Geometry screens differ by one pixel each way - why?
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Implied multiplication-x[space](a+b) is not read as multiplication?
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Limiting the glare off the screen in classrooms
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Integration - why is a numeric answer returned when I expected symbolic?
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Menu options are fuzzy - Why?
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tCollect() (trig collect) function algorithm
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tExpand() (trig expand) function algorithm
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Trig functions return unexpected answers in DEG mode - why?
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View the name of the variable currently in any editor
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ViewScreen connector - does every TI-92 have it?
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What is under the little screwed in cover plate under the back case?
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When doesn't work as expected in a data variable - why?
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Why does 4
x
get simplified into 2
2x
?
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Why, when I enter solve (sin(x)=0,x) do I get x=@n1*pi? (TI-92)
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zeros() function algorithm
comDenom() (common denominator) function algorithm.
Term by term, comDenom(a/b+c/d) reduces (a*d+b*c)/(b*d) to lowest terms, and repeats this process
for each additional term.
Changing the order of steps gives different answers sometimes - why?
There are times that changing the order of steps in a problem are valid and do not affect the
mathematics. In these cases, the end result can "look" different because the simplification process
had different forms of expressions to work on each time.
Difference between [diamond] [OFF] and [2nd] [OFF].
Let's say the you are in the graphing screen and want to turn the unit off. If you press [2nd] [OFF] the
calculator will reset back to the home screen and then turn off. So, when you turn it back on you go
back to the home screen instead of where you were.
If you use the [diamond] [OFF] this emulates APD (Automatic Power Down). This means that when
you turn the unit back on, you go back to where you were.
fMin() (symbolic minimum) function algorithm.
For fMin(expr,var), if d(expr,var) cannot be computed symbolically, a combination golden-section
parabolic interpolation search is performed for one local minimum. (R. Brent, "Algorithms for
Minimization without Derivatives", Prentice-Hall, 1973.) Otherwise, fMin(expr,var) is determined
by solve(d(expr,var)=0,var), filtered by attempting to determine the signs of higher-order derivatives at
these candidates. Surviving candidates are compared with the limits of expr as var approaches inf and
-inf; and also with points where expr or its derivative is discontinuous.
fMax() (symbolic maximum) function algorithm.
fMax() is similar to fMin(). See fMin() for more information.
B - 5