Casio FX-D400

Crucial safety and data preservation warnings for calculator use.

Overview of fundamental calculator keys and their primary functions.

Details on keys used for modifying or correcting input and calculations.

Functions and usage of numerical input and operator keys.

Instructions for turning the calculator on and off, and auto power off.

Explanation of color coding and multi-functionality of calculator keys.

Overview of different calculation modes and their purpose.

Steps to choose between COMP, SD, and LR calculation modes.

Procedure to set angle units (DEG, RAD, GRA) and display formats.

How results are displayed in scientific notation (NORM1 and NORM2 modes).

Usage of fraction and sexagesimal display formats.

Steps to reset calculator to default modes to troubleshoot errors.

Procedure to adjust the display contrast for better readability.

Step-by-step guide for replacing the calculator's battery.

Explanation of the automatic power-off feature to conserve battery.

How to enter formulas and obtain results using the calculator.

Order in which the calculator evaluates operations in a formula.

Explanation of the calculator's internal memory stacks for operations.

Method to modify specific parts of a previously entered calculation.

How to remove a specific step or input from a calculation.

Causes and handling of calculation errors like overflow and syntax errors.

How to store and recall values using dedicated variable memory slots.

Using M, M+, M- for memory storage and accumulation.

Procedure to insert new input or functions within an existing calculation.

Performing addition, subtraction, multiplication, and division.

Using parentheses to control calculation order and grouping.

How to specify the number of digits shown after the decimal point.

How to specify the number of significant digits for results.

Storing and recalling up to 9 values using variable memory.

Using independent memory for accumulation and storage.

Using the 'Ans' memory to recall the result of the last calculation.

Performing subsequent calculations using the previous result.

Performing calculations involving sin, cos, tan and their inverses.

Explains conversion from rectangular (x, y) to polar (r, θ).

Explains conversion from polar (r, θ) to rectangular (x, y).

Using prefixes like micro, milli, kilo, mega, pico, nano, giga, tera.

Activating engineering notation for calculations and display.

Performing calculations like mean, standard deviation for one data set.

Steps to input individual data points for statistical analysis.

How to remove specific data entries from statistical memory.

Performing regression analysis using logarithmic relationships (y=A+Blnx).

Formulas and outputs for logarithmic regression.

Lists calculator error messages and their countermeasures.

Overview of fundamental arithmetic and algebraic calculation capabilities.

Overview of fundamental arithmetic and algebraic calculation capabilities.

List of available scientific, trigonometric, and hyperbolic functions.

Summary of single and paired-variable statistical analysis features.

Information on calculator memory types and usage.

The numerical limits for calculations and internal operations.

How results are rounded based on display settings.

Modes for scientific notation display (NORM1, NORM2).