List Calculations; Equation Solvers; Errors And Calculation Ranges - Sharp WriteView EL-W506 Operation Manual

trans matrix name Returns the matrix with the columns
transposed to rows and the rows
transposed to columns.
mat list Creates lists with elements from the
(N 7)
left column of each matrix. (matA L1,
matB L2, matC L3, matD L4)
Mode changes from MATRIX mode to
LIST mode.
matA list Creates lists with elements from each
(N 8) column of the matrix. (matA L1, L2,
L3, L4)
Mode changes from MATRIX mode to
LIST mode.
Notes:
• When the matrix entry screen is displayed, you cannot
perform matrix calculations because the MATH menu is not
available.
• If the calculation result is a matrix, it will be displayed in the
matrix entry screen (note that this replaces any existing
data in the buffer). To store the calculation result, fi rst press
j to exit the matrix entry screen. Press N 4 and
select a memory (matA–matD) to store the newly-created
matrix in.
• When the calculation results are in matrix form, pressing
neither l nor r will bring you back to the original
expression.

LIST CALCULATIONS

You can store and calculate up to
four lists of up to sixteen elements
each in LIST mode.
Press b 5 to enter LIST
mode.
Note: You can use the MATH menu in LIST mode to edit, recall,
and store lists, as well as to call list-specifi c functions.
Entering and Storing Lists
Before performing list calculations, a list must be created.
Follow the steps below to enter and store lists.
1. Press b 5 to enter LIST mode.
2. Press N 2 to bring up the list entry screen.
• Any list data remaining in the buffer, along with any
previously entered, loaded, or calculated list data, will be
displayed.
3. Defi ne the list size (up to sixteen elements) by entering a
value using the number keys and pressing e.
List size
Element fi elds
Entry fi eld
List entry screen (example)
4. Enter each element in the list by entering a value in the
entry fi eld and pressing e.
• Each list element can display up to eight digits (the
decimal point counts as one digit). If an element exceeds
eight digits in length, it will be displayed in exponent
notation within the list.
• A maximum of six elements can be displayed at one
time. Use u, d, l, and r to move the
cursor through the list.
5. When you have entered a value for each element, press
j to exit the list entry screen.
6. Press N 4 and select a memory (L1–L4) to store
the newly-created list in.
Modifying a stored list
1. To load a stored list into the list entry screen, press N
3, then select the memory (L1–L4) that holds the list
you wish to modify.
• Loading new data into the screen will automatically
replace any data that may already exist there.
2. Using the list entry screen, you can modify the values of
elements in the list. Assign new values wherever necessary
and press e after each one.
• If you wish to modify the size of a list, fi rst press j
N 2. You can then enter new values for the list size.
3. When you have fi nished making changes, press j to
exit the list entry screen.
4. Press N 4 and select a memory (L1–L4) to store
the newly-created list in.
Using Lists in Calculations
Lists stored in memories (L1–L4) can be used in arithmetic
calculations and calculations that use
also use the following list-specifi c functions that are available in
the MATH menu.
sortA list name Sorts list in ascending order.
sortD list name Sorts list in descending order.
dim (list name, size) Returns a list with size changed as specifi ed.
fi ll (value, size) Enters the specifi ed value for all items.
cumul list name
Sequentially cumulates each item in the list.
df_list list name
Returns a new list using the difference
between adjacent items in the list.
aug (list name, list name)
Returns a list appending the specifi ed lists.
min list name Returns the minimum value in the list.
max list name Returns the maximum value in the list.
mean list name Returns the mean value of items in the list.
med list name
Returns the median value of items in the list.
sum list name
Returns the sum of items in the list.
prod list name
Returns the multiplication of items in the list.
stdDv list name
Returns the standard deviation of the list.
vari list name
Returns the variance of the list.
o_prod (list name, list name) Returns the outer product of 2 lists (vectors).
i_prod (list name, list name) Returns the inner product of 2 lists (vectors).
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abs_list list name Returns the absolute value of the list (vector).
list mat
Creates matrices with left column data from
(N 7)
each list. (L1 matA, L2 matB, L3 matC,
L4 matD)
Mode changes from LIST mode to MATRIX
mode.
Creates a matrix with column data from
list matA
(N 8) each list. (L1, L2, L3, L4 matA)
Mode changes from LIST mode to MATRIX
mode.
Notes:
• When the list entry screen is displayed, you cannot perform list
calculations because the MATH menu is not available.
• If the calculation result is a list, it will be displayed in the list
entry screen (note that this replaces any existing data in the
buffer). To store the calculation result, fi rst press j to exit
the list entry screen. Press N 4 and select a memory
(L1–L4) to store the newly-created list in.
• When the calculation results are in list form, pressing neither
l nor r will bring you back to the original expression.

EQUATION SOLVERS

The results obtained by these functions may include a margin
of error.
Simultaneous Linear Equations
Simultaneous linear equations with two unknowns (2-VLE) or
with three unknowns (3-VLE) may be solved using the following
functions.
① 2-VLE: b 6 0
a x + b y = c
1 1 1
a x + b y = c
2 2 2
② 3-VLE: b 6 1
a x + b y + c z = d
1 1 1 1
a x + b y + c z = d
2 2 2 2
a x + b y + c z = d
3 3 3 3
• If the determinant D = 0, an error occurs.
• If the absolute value of an intermediate result or calculation
result is 1 10 100 or more, an error occurs.
Solving simultaneous linear equations
1. Press b 6 0 or b 6 1.
2. Enter the value for each coeffi cient (
• Coeffi cients can be entered using ordinary arithmetic
operations.
• To clear the entered coeffi cient, press j.
• Press u or d to move the cursor up or down through
the coeffi cients. Press @ u or @ d to jump to
the fi rst or last coeffi cient.
3. When all coeffi cients have been entered, press e to solve
the equation.
• While the solution is displayed, press e or j to
return to the coeffi cient entry display. To clear all the
coeffi cients, press @ Z .
Quadratic and Cubic Equations
Quadratic (
x x x
3 , 2 , and 1 . You can equations may be solved using the following functions.
① Quadratic equation solver: b 6 2
② Cubic equation solver: b 6 3
Solving quadratic and cubic equations
• Press b 6 2 or b 6 3.
• Coeffi cients for these equations can be entered in the same
manner as those for simultaneous linear equations.

ERRORS AND CALCULATION RANGES

Errors
An error will occur if an operation exceeds the calculation ranges,
or if a mathematically illegal operation is attempted. When an error
occurs, pressing l or r automatically moves the cursor
back to the place in the equation where the error occurred. Edit
the equation or press j or @ Z to clear the equation.
Error codes and error types
ERROR 01: Syntax error
• An attempt was made to perform an invalid operation.
Ex. 2 + & 5 =
ERROR 02: Calculation error
• The absolute value of an intermediate or fi nal calculation
result equals or exceeds 10
• An attempt was made to divide by zero (or an intermediate
calculation resulted in zero).
• The calculation ranges were exceeded while performing
calculations.
ERROR 03: Nesting error
• The available number of buffers was exceeded. (There are
10 buffers* for numeric values and 64 buffers for calculation
instructions).
* 5 buffers in CPLX mode, and 1 buffer for matrix/list data.
ERROR 04: Data over error
• Data items exceeded 100 in STAT mode.
ERROR 07: Defi nition error
• Matrix/List defi nition error or the attempted entering of an
invalid value.
ERROR 08: DIM unmatched error
• Matrix/List dimensions inconsistent while calculating.
ERROR 09: Invalid DIM error
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• Size of matrix/list exceeds calculation range.
ERROR 10: Undefi ned error
• Undefi ned matrix/list used in calculation.
Alert Messages
Cannot delete!
• The selected item cannot be deleted by pressing N or
a b
1 1 @ y in the WriteView editor.
D =
a b
2 2
Ex. @ * 5 r A l N
In this example, delete the exponent before attempting to
delete the parentheses.
a b c
1 1 1
D = a b c
Cannot call!
2 2 2
a b c
3 3 3 • The function or operation stored in defi nable memory (D1 to
D4) cannot be called.
Ex. An attempt was made to recall a statistical variable from
within NORMAL mode.
• Expressions stored in formula memories (F1 to F4) cannot be
called.
Buffer full!
a
, etc.).
1
• The equation (including any calculation ending instructions)
exceeded its maximum input buffer (159 characters in the
WriteView editor or 161 characters in the Line editor). An
equation may not exceed its maximum input buffer.
x c ax x
ax b b
2 0 ) or cubic ( 3 2
100
.
cx
d
0)
29