Type a value and press the [M+] (DT) key. Repeat this for all data points. Get Results: Press [SHIFT] [2] (S-VAR) to access the Mean ( ) or Population/Sample Standard Deviation ( Press [SHIFT] [1] (S-SUM) to find the sum of values ( ) or sum of squares ( 6. Troubleshooting and Maintenance Common Error Messages
Given that the fx-50FH II is tailored for the Hong Kong curriculum, Casio’s Hong Kong portal often has dedicated resources.
Occurs when you attempt a mathematically impossible operation, such as dividing by zero or taking the square root of a negative number. Check your initial values.
: To restore factory default settings, press Shift then 9 ; choose option 3 (All) and press = to confirm.
For calculating standard deviation, mean, and performing linear or non-linear regression analysis. casio fx50fh ii manual
Occurs when a formula or command is typed incorrectly (e.g., two consecutive operators like ++ ). Use the left or right arrow keys to jump directly to the error location and fix it.
Natural V.P.A.M. displays fractions as they are written in textbooks. Trigonometric & Hyperbolic Functions:
Occurs when a calculation or program exceeds the internal memory capacity of the calculator. Simplify your expressions. Battery Replacement
Since the physical manual is easy to lose, take proactive steps: Type a value and press the [M+] (DT) key
? → A : ? → B : ? → C : B² - 4A×C → D : D ≧ 0 Rightarrow (-B + √D) ÷ (2A) ▲ D ≧ 0 Rightarrow (-B - √D) ÷ (2A) Use code with caution. Running a Program Press the key in standard calculation mode ( MODE 1 ).
Select 3 (All) to clear all memories, programs, and formulas. Press [=] (Yes).
"First," Elias began, "you must understand that this machine is exact. Unlike a graphing calculator that gives you decimals, this one prefers fractions. If you type in one-third, it stays as a fraction."
? → A (Prompt for radius) π × A² → B (Calculate area) B (Display result) : To restore factory default settings, press Shift
Slide out the old LR44 battery and insert a new one with the positive (+) side facing up.
The calculator features a two-line display. The top line shows the calculation formula, and the bottom line displays the result.
Check for division by zero, square root of a negative (unless in CMPLX mode), or an overflow. Also, the solver may fail if your initial guess is poor. Enter a different starting value before pressing SHIFT SOLVE .
The official manual is roughly 45-50 pages long. It is concise but dense. Let’s decode the most critical chapters.
To restore the calculator completely to its factory default settings and wipe all custom programs: Press . Press [3] (All) . Press [=] to confirm. Press [AC] to complete the reset. Battery Replacement Indicator