Chapter 2: Main Application
81
Example: To transform the rectangular form [1, 1, 1] into its equivalent
spherical form (in the Radian mode)
u
toCyl
[Action][Vector][toCyl]
Function: Returns an equivalent cylindrical form [
r
∠
z
].
Syntax: toCyl (Mat [,natural number] [ ) ]
• This command can be used with a 1 × 3 or 3 × 1 matrix only.
• This command returns “
r
” when “natural number” is 1, “
” when “natural number” is 2, and “
z
” when “natural
number” is 3.
• This command returns a cylindrical form when you omit “natural number”.
Example: To transform the rectangular form [1, 1, 1] into an equivalent
cylindrical form (in the Radian mode)
Using the Equation/Inequality Submenu
The [Equation/Inequality] submenu contains commands that are related to equations and inequalities.
u
solve
[Action][Equation/Inequality][solve]
Function: Returns the solution of an equation or inequality.
Syntax 1: solve(Exp/Eq/Ineq [,variable] [ ) ]
• “
x
” is the default when you omit “[,variable]”.
Example: To solve
ax
+
b
= 0 for
x
Syntax 2: solve(Exp/Eq/Ineq
,variable[, value, lower limit, upper limit] [ ) ]
• “value” is an initially estimated value.
• This command is valid only for equations and
expressions when “value” and the items following it are
included. In that case, this command returns an approximate value.
• A true value is returned when you omit “value” and the items following it. When, however, a true value
cannot be obtained, an approximate value is returned for equations only based on the assumption that value
= 0, lower limit = –
∞
, and upper limit =
∞
.
Syntax 3: solve({Exp-1/Eq-1, ..., Exp-N/Eq-N}, {variable-1, ..., variable-N} [ ) ]
• When “Exp” is the first argument, the equation Exp = 0 is presumed.
Example: To solve simultaneous linear equations 3
x
+ 4
y
= 5, 2
x
– 3
y
= –8
You also could input the simultaneous equations shown in this example using the soft keyboard
#
key. The
following shows the required input syntax.
Exp-1/Eq-1
Exp-N/Eq-N
variable-1, ..., variable-N
• The following shows the required key operation to input this example using the
#
key.
#
d
X
+e
Y
=f
c
c
X
-d
Y
=
-
i
e
X
,
Y
w
• To input simultaneous equations with three or more unknowns, tap the
#
key when the cursor is in the
Exp-N/Eq-N input field. Each tap of
#
will add one more line for input of an equation.
