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(MthIO-MathO)
3
3
Example 6:
√5 +
√-27 = -1.290024053
(LineIO)
1
Example 7:
= 12
1
1
-
3
4
(LineIO)
Note
• The following functions cannot be input in consecutive sequence: x
input 2
, for example, the final
press the
key, and then press
Rectangular-Polar Coordinate
Conversion
Pol converts rectangular coordinates to polar coordinates, while Rec
converts polar coordinates to rectangular coordinates.
(1) Rectangular Coordinates (Rec)
(2) Polar Coordinates (Pol)
2
(LineIO)
2
(
) 5
(
)
27
3
4
will be ignored. To input 2
(MthIO-MathO).
32
3
-1.290024053
2
3
, x
,
, x
2 2
, input 2
3√2
4.243
4.243
12
-1
. If you
,
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Do you have a question about the fx-82ES PLUS and is the answer not in the manual?
Questions and answers
How to calculate %RSD and linearity
To calculate %RSD (Relative Standard Deviation) and linearity using the Casio fx-82ES PLUS:
1. %RSD Calculation:
- Enter statistical mode: Press `(MODE)`, then select `2: STAT`.
- Choose `1-VAR` (one-variable statistics).
- Input your data values: Enter each value followed by `(=)`.
- Calculate the mean `(x̄)`: Press `(STAT) → (Var) → (x̄)`.
- Calculate population standard deviation `(σ)`: Press `(STAT) → (Var) → (σ)`.
- Compute %RSD manually: %RSD = (σ / x̄) × 100.
2. Linearity Calculation:
- Enter statistical mode: Press `(MODE)`, then select `2: STAT`.
- Choose `A+BX` (linear regression).
- Enter paired `(x, y)` data: Input `x` values followed by `(=)`, then `y` values followed by `(=)`.
- Compute the correlation coefficient `(r)`: Press `(STAT) → (Reg) → (r)`.
- A correlation coefficient close to 1 or -1 indicates strong linearity.
The calculator does not directly compute %RSD, so you must perform the division and multiplication manually.
This answer is automatically generated