User Manual

20050501
k Complex Mode and Real Mode
The Complex mode is for complex number calculations, while the Real mode is limited to
calculations within the range of real numbers. Performing a calculation in the Real mode
that produces a result that is outside the range of real numbers causes an error (Non-Real
Result error).
u Examples of Complex mode and Real mode calculation results
Expression Complex Mode Real Mode
solve (x
3
– x
2
+ x – 1 = 0, x){x = 1, x = –i, x = i}{x = 1}
i + 2i 3i ERROR: Non-Real Result
k Radian Mode and Degree Mode
You can specify radians or degrees as the angle unit for display of trigonometric calculation
results.
u Examples of Radian mode and Degree mode calculation results
(In Standard mode)
Expression Radian Mode Degree Mode
sin (π/6)
1
sin
2
sin (30) sin (30)
1
2
k Assistant Mode and Algebra Mode
The Algebra mode automatically simplifies mathematical expressions produced by
calculations. No simplification is performed in the Assistant mode. In the Assistant mode,
you can view intermediate results as well, which allows you to see the steps that lead to a
particular result as shown in the “expand” example below.
u Examples of Assistant mode and Algebra mode calculation results
Expression Assistant Mode Algebra Mode
x
2
+ 2x + 3x + 6 x
2
+ 2 · x + 3 · x + 6 x
2
+ 5 · x + 6
expand ((x+1)
2
) x
2
+ 2 · x · 1 + 1
2
x
2
+ 2 · x + 1
x + 1
(When 1 is assigned to x)
x + 1 2
Important!
The Assistant mode is available in the Main application and eActivity application only.
2-2-7
Basic Calculations
(
π
)
6