Casio fx-3650P User's Guide
![Casio fx-3650P Calculator manual cover](/images/JGMIjIEwfehwmfpWvRmFKyRl/thumbs/thumb175x175.webp)
To perform basic arithmetic operations, use the keypad to enter numbers and operators (+, -, *, /). Press the "=" button to display the result.
To reset the calculator, press and hold the "AC" button for a few seconds until the display shows "RESET". Confirm by pressing the "=" button.
To enter a program, press the "MODE" button repeatedly until you reach the "PROG" mode. Enter your program using the keypad, then press "SHIFT" followed by "RUN" to execute it.
Switch to the "STAT" mode by pressing "MODE" until "STAT" appears. Enter your data points, then use the built-in statistical functions to perform calculations.
If the display is faint, replace the battery with a new one. Open the battery compartment, remove the old battery, and insert a fresh LR44 or equivalent button cell.
To store a value in memory, use "STO" followed by a memory location (e.g., "STO A"). To recall the value, press "RCL" followed by the memory location.
Enter the equation in the calculator and use the "SOLVE" function. Press "SHIFT" followed by "CALC" to solve for the unknown variable.
To calculate powers, use the "^" button. For roots, use the "SHIFT" key followed by the appropriate root symbol, such as "√" for square roots.
Press the "MODE" button repeatedly until you reach the angle unit setting. Select "DEG" for degrees or "RAD" for radians to change the unit.
To compute complex numbers, enter the complex mode by pressing "MODE" until "CMPLX" appears. Use the "i" button to input imaginary numbers.