K power functions and power root functions, K rectangular-polar coordinate conversion – Casio fx-115ES User Manual
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k Power Functions and Power Root
Functions
X
2
, X
3
, X
–1
, X^, '
'
'
'
'(,
3
'
'
'
'
'(, ^'
'
'
'
'(
Appendix <#024> to <#028>
k Rectangular-Polar Coordinate Conversion
Rectangular
Polar Coordinates
Coordinates (Rec)
(Pol)
• Coordinate conversion can be performed in the COMP and STAT
calculation modes.
Converting to Polar Coordinates (Pol)
Pol(X, Y)
X: Specifies the rectangular coordinate X value
Y: Specifies the rectangular coordinate Y value
• Calculation result
θ
is displayed in the range of –180
° <
θ
< 180
°.
• Calculation result
θ
is displayed using the calculator’s default angle
unit.
• Calculation result
r
is assigned to variable X, while
θ
is assigned
to Y.
Converting to Rectangular Coordinates (Rec)
Rec(
r
,
θ
)
r
: Specifies
r
value of polar coordinate
θ
: Specifies
θ
value of polar coordinate
• Input value
θ
is treated as an angle value, in accordance with the
calculator’s default angle unit setting.
• Calculation result
x
is assigned to variable X, while
y
is assigned
to Y.
• If you perform coordinate conversion inside of an expression instead
of a stand-alone operation, the calculation is performed using only
the first value (either the
r
-value or the X-value) produced by the
conversion.
Example: Pol ('
2, '
2) + 5 = 2 + 5 = 7
Appendix <#029> to <#030>