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## How to Solve Vectors Using Casio fx991es

(1). If a Vector A = 3i +3j -k
Vector B = 2i + 4j + 5k
Vector C = 3i - 2j + 4k
Find Vector A + B + C
Solution Using Casio fx991es
[ON] [MODE]   (VECT A)  (WE HAVE 3 ROWS)  [=]  [=] [-]  [=] [AC] [SHIFT]   (DIM)  (VECT B)   [=]  [=]  [=] [AC] [SHIFT]   (DIM)  (VECT C)   [=] [-]  [=]  [=] [AC] [SHIFT]   (VECT A) [+] [SHIFT]   (VECT B) [+] [SHIFT]   (VECT C) [=]
Ans = 8i + 5j + 8k

Subtraction Of Vectors
​​​​​​(2). If Vector A = 3i + 2j + 4k
Vector B = 2i - 3j + 5k
Find Vector A - B
Solution Using Casio fx991es
[SHIFT]   [=] [AC] [MODE]   (VECT A)  (B/C IT HAS 3 ROWS)  [=]  [=]  [=] [AC] [SHIFT]    (VECT B)   [=] [-]  [=]  [=] [AC] [SHIFT]   (VECT A) [-] [SHIFT]   (VECT B) [=]
Ans = i + 5j -k
NB: After inputing the values and want to check each data entered or to correct entered values press [SHIFT]   (DATA) EITHER PRESS  FOR (VECT A) OR 2 FOR (VECT B) THEN YOU CAN NOW CHECK IT OR CORRECT IT THEN.

Multiplication Of Vectors Using Dot Product (.)
(3). If Vector A = 3i + 2j - 3k
Vector B = 2i + 3j + 4k
Find Vector A . B
Solution Using Casio fx991es
[SHIFT]   [=] [AC] [MODE]   (VECT A)   [=]  [=] [-]  [=] [AC] [SHIFT]    (VECT B)   [=]  [=]  [=] [AC] [SHIFT]   (VECT A) [SHIFT]   (DOT) [SHIFT]   (VECT B) [=]
Ans = 0

Multiplication Of Vectors Using Cross Product (×) or (^)
(4). If Vector A = 2i + 3j +k
Vector B = 3i - 2j + 3k
Find Vector A×B or A^B
Solution Using Casio fx991es
[SHIFT]   [=] [AC] [MODE]   (VECT A)   [=]  [=]  [=] [AC] [SHIFT]    (VECT B)   [=] [-]  [=]  [=] [AC] [SHIFT]   (VECT A) [×] (MULTIPLICATION SIGN) [SHIFT]   (VECT B) [=]
Ans = 11i - 3j - 13k
NB: This can help to solve unit angles between Vectors easier.