Question

This is an example of a data type conversion function.

a. sqrt
b. toReal
c. substring
d. isNumeric

Answer 1

The correct data type conversion function from the options given is 'toReal'. It is used to convert a value to a real number in programming. Additionally, examples were provided to illustrate how to convert various numbers into scientific notation.

Step-by-step explanation:

The question you've asked pertains to identifying a data type conversion function. Among the options provided: sqrt (square root), toReal (converts a data type to a real number), substring (extracts a part of a string), and isNumeric (checks if the value is numeric), the correct answer is b. toReal. This is a function typically used in programming to convert a value to a real number data type.

Now, if you're also looking to convert numbers to scientific notation, here's how you would do it for each example:

1. 637.8 becomes 6.378 × 102 in scientific notation.
2. 0.0479 becomes 4.79 × 10-2 in scientific notation.
3. 12,378 becomes 1.2378 × 104 in scientific notation.
4. 0.00032 becomes 3.2 × 10-4 in scientific notation.

Remember, the goal of scientific notation is to express numbers as a product of a number between 1 and 10 and a power of 10.