Brief Notes for Casio fx-9750G PLUS for 12MAT students
General notes for each of the Achievement Standards:
Sometimes the calculator will not give you an answer, but it can verify your answer.
F <-> D not working? (This converts decimals to fractions and back again)
Menu/Link/F6/Off
Algebra 90284
To solve log equations, especially to base different from 10, you should change it to
an exponential equation first, and solve that in Equation/Sover. eg Find log223 solve 2x = 23.
Solving quadratics – Equations/Polynomial/2, OR Graph/G-Solv/Root
Solving simultaneous linear equations - Equation/Simultaneous/2 Note that your
equations have to be in the form ax + by = c
Solving simultaneous linear/nonlinear equations – use Graph/G-Solv/ISCT
You can use Equation/Solver to solve equations with several variables using Alpha.
Graphs 90285
For most graphs it is a good idea to go View Window/INIT. (So the x values are be “nice”
numbers)
After graphing a function you can got to Menu/TABL to get a table of values. Exit
RANG lets you change the range of x. To get one Y value for x, just type in the x
value.
If you have found the equation of a tangent at a point, graph your tangent line and
check that the point is actually on it, and the line is tangential to the curve.
Calculus 90286
To evaluate numerically use RUN OPTN CALC
First derivative: d/dx(function, point)
Definite integral (function, lower limit, upper limit)
Relative min: FMin(function, left, right)
To evaluate graphically use GRAPH G-Solv
Find the gradient at a particular point, or find the x value for a given gradient - use
Trace (make sure that the derivative shows when you put the trace on in Graph – Shift/Menu/Derivative/On)
Find the integral – G-Solv/F6/ use left/right arrow to find lower x value, press EXE,

 dxx value, press EXE. The integral will be shaded.
use left/right arrow to find upper

Turning points – G-Solv/MAX or MIN
Coordinate geometry 90287
After finding the equation of a line joining two points, in Graph (or in Table) check
that the two points are on that line.
To solve for “c” in 7 = 2 X 3 + c (eg. find equation of line parallel to y = 2x + 4 going
through (3, 7) you could use Equation/Solver.
Finding intersection of two lines – graph the lines and use G-Solv/ISCT OR use
Equation/Simultaneous
Sampling 90288
Generating random numbers is probably easier done on your old calculator. However it
can be done on the graphics calculator – Menu/Run/OPTN/F6/Prob/Ran#.
Calculating means etc: Menu/List and input the data values (you might first have to
delete what is in there already). Now go to Menu/Stat where you will find the data
values. Press F6, then CALC/1VAR Scroll down to see more statistics.
Simulation, Normal distribution 90289
Simulation: see notes for Sampling 90288
Normal distribution:
Menu/Stat/DIST/Norm Don’t use Npd. Use forNcd for ordinary problems, and
InvN for Inverse problems. Note: for Inverse problems the area put in is the area to
the left of x. If you have an area of 0.05 to the right of X you need to input 0.95 for
the area.
Trigonometry 902891
No obvious use.
Trigonometric equations 902892
Make sure you calculator is set to degrees or radians as you wish – Shift/Menu and
scroll down to Angle.
When you graph a trig function the first thing you should is go V-Window/TRIG. You
may want to change the x min to 0 and the x max to 360 for most graphs.
Finding the x value for a given y value: G-Solv/F6/X-Calc and input the y value. Use
the right arrow to move across to further x values.