Casio fx-9860GII SD - Matrix Calculations and Solving

CASIO
E-8
U
Actual solution: 12
Example 4: Calculating a definite integral
To perform the following calculation
0

2

sin(x)dx
• Use the radian angle unit.
K@(RUN • MAT)
K(SET UP)(Math)
AAAAAA(Rad))
*(CALC)(
°dx)QTC?D
$(P)A
U
Actual solution: 1
Matrix Calculations
Example 1: To perform the following calculation
2 5 3
–1 2 0
s
4 2
5 1
0 3
=
Assign
2 5 3
–1 2 0
to Mat A, and
4 2
5 1
0 3
to Mat B.
On the {MAT} menu, select [Mat A], specify the matrix dimensions (2 rows s
3 columns), and then enter the elements.
K@(RUN • MAT)
K(SET UP)(Line))
(MAT)U
AUBUU
AUDUBU@UAU?U
In the same way, select [Mat B], specify the matrix dimensions (3 rows s 2
columns), and then enter the elements.
)AU
BUAUU
CUAUDU@U?UBU
Perform the following calculation: Mat A s Mat B.
))
*(MAT)(Mat)?T(A)
(Mat)?J(B)
U
Actual result:
33 18
6 0
Example 2: To determine whether a solution exists for the following simultaneous
equations
On the {MAT} menu, select [Mat A], specify the matrix dimensions (2 rows s
3 columns), and then enter the elements.
K@(RUN • MAT)
K(SET UP)(Line))
(MAT)U
AUBUU
AU@UBUCUAUDU
Use the Rref function to determine whether a solution exists for the equations.
• To enter the Rref function, press [OPTN] - [MAT] - [Rref].
2
x
–
y
= 3
–4
x
+ 2
y
= 5
{
2
x
–
y
= 3
–4
x
+ 2
y
= 5
{