Casio Scientific Calculator - FX-85GTCWPLUS-W-UT

Yes, the Casio fx-85GT CW+ is approved for use in every UK exam where a calculator is permitted.

It uses solar power as the primary source. A battery backup ensures the calculator continues to function even in low light conditions or when the solar panel is not receiving sufficient light.

It means that mathematical expressions like fractions, roots (surds), and exponents are displayed exactly as they would be written on paper in a textbook, making them easier to read and understand.

Yes, you can reset the calculator to its default settings. Press `SHIFT`, then `CLR` (9), and select the option to reset all settings (usually `3`). Confirm the reset.

It can perform calculations for mean, standard deviation, quartiles, and various types of regression analysis.

Press the `SHIFT` button, then the `MODE` button. You will see a list of modes including COMP, CMPLX, STAT, BASE, EQN, MATRIX, TABLE, and VECTOR. Select the desired mode by pressing the corresponding number key.

The 4-tone display enhances readability by using different colors to distinguish elements on the screen, such as menu items, input values, and results, making complex information easier to parse.

Ensure the calculator is exposed to adequate light for the solar panel. If the issue persists, the battery backup may need replacing.

Verify that the calculator is in the correct mode (e.g., Degree, Radian, Gradient for trigonometric functions). Check input and ensure the Natural Textbook Display is interpreted correctly. Press `SHIFT` + `CLR` (9) then `1` (Ine ON) to reset settings.

Check for any physical obstruction. If the issue continues, try resetting the calculator using `SHIFT` + `AC` (ON) and then pressing the `RESET` button located on the back panel with a thin object.