Casio fx9750GII Getting Started page 59

Algebraic substitution – numeric [in RUN-MAT] cont.
Example
Calculate the value of the following when x = -2, 0, 2 and 4, in the expression
2x + 4x – 1.
2
Enter the expression
F4
SHIFT VARS
+ 4
X, θ ,T
A '?' will display, this is the calculators way of saying, "Enter in a number."
Enter in the number
- 2
then
the answer -1 is displayed, the calculator has done the calculation:
2×(-2) + 4×(-2) – 1 = -1
2
EXE this brings up the '?' again
0 then EXE
Repeat the above sequence, calculating the expression of 2x
of the x-values required.
Note:
Differentiation d/dx and d /dx
2
Factorisation checking [in RUN-MAT]
Checking that you have factorised (put into brackets) or expanded (removed the brackets) correctly:
The 'calculator's logic' will return a '0' if incorrectly done or a '1' if correctly done.
As this calculator is a 'numerical manipulator' and NOT a 'symbolic manipulator' the student MUST learn how to
factorise (put into brackets) or expand (remove from brackets).
Example
Expand (x + 5)(x + 2)
Enter in the equation in bracketed and the expanded form
+
X, θ ,T
(
x +
X, θ ,T 2
The result 1 indicates that it is correctly expanded.
The result 0 indicates that it is incorrectly expanded.

X, θ ,T SHIFT VARS
- 1 then EXE
EXE
is via [SHIFT] [OPTN] [F4] for CALCulus.
2
5
X, θ ,T
) (
7 + 1
X, θ ,T
F6 F5 2 x
X, θ ,T
+ 4x – 1 for each
2
+ 2
) SHIFT
0 then EXE
fx9750GII
Result
2
Result
.
cont. on next page
CHAPTER 7 | PG 59