Next let's make sure that you understand about rounding. The function roundFloat will round to a specified number of digits. It always displays its answer with exactly one digit to the left of the decimal point in the mantissa. If we round 16. Notice how the .000244 was rounded down , because that was where the closest two-digit mantissa was.
Exercises Here are a few more examples.
Try to predict the answer before having Maple evaluate it. Try out some of your own examples, too. No matter how sophisticated the measuring device, any physical measurement is an approximation. When we write a measurement in scientific notation, the number of digits in the mantissa conveys crucial information. If we give it a measurement written to some number of significant digits, it will give us back the range in which the true measurement must lie.