How to use function of the scientific calculator

1. Turn on the scientific calculator by pressing the power button.

2. Identify the function you want to use (e.g. square root, sine, cosine, logarithm, etc.).

3. Enter the number you want to calculate the function for using the number keys.

4. Press the corresponding function key on the calculator (usually labeled with the function name or symbol).

5. Some scientific calculators require you to press the number key first, then the function key. For example, to calculate the square root of 9, you would press "9" followed by the square root key.

6. The result of the calculation will be displayed on the calculator screen.

7. If you want to perform multiple functions on a single number, you can do so by entering the number, pressing the first function key, then the second function key, and so on.

8. To clear the calculator screen and start a new calculation, press the clear button or the C/CE button.

9. Consult the user manual of your specific scientific calculator for more detailed instructions on how to use its functions.