You are watching: What does e mean in calculator
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On a calculator display, E (or e) means exponent the 10, and it"s constantly followed by an additional number, which is the worth of the exponent. For example, a calculator would show the number 25 trillion as one of two people 2.5E13 or 2.5e13. In various other words, E (or e) is a short form for clinical notation.
Science is full of very large and very little numbers the are complicated to read and also write. Because that example, the massive of the planet is 5,970,000,000,000,000,000,000,000 kilograms, when the massive of a hydrogen atom is 0.00000000000000000000000000167 kilograms. Scientific notation makes these numbers much easier to manage by to express the 0"s together a power of ten. Making use of this notation, the mass of the earth becomes 5.97 × 1024 kg, and also the fixed of a hydrogen atom becomes 1.67 × 10-27 kg. Rather of numbers with lengthy strings of zeros the are complicated to count and even more an overwhelming to display screen on a tiny screen, girlfriend have more manageable decimal fractions and also exponents the 10.
In its written form, clinical notation would look weird on a calculator. It would be confusing and also it wouldn"t right on a small display. To avoid these problems, manufacturers created a symbol for "X 10." This prize is one of two people E or e, depending on the calculator. This letter is constantly followed by a number, i beg your pardon is the exponent come which 10 is raised.
On a calculator display, the massive of the earth would be presented as 5.97E24 (or 5.97e24). The number 5.97 is the argument and also the number 24 is the exponent. Similarly, the fixed of a hydrogen atom would be 1.67E-27 (or 1.67e-27).
It"s just as an overwhelming to punch in long strings of zeroes top top a calculator pad as it is to create them top top paper, so should calculators have a shortcut. It"s the EE key. To go into a number in clinical notation, very first input the argument, then press the EE key and enter the exponent. For example, to go into the mass of the earth, vital in 5.97, then push the EE vital and get in 24. The display screen will read 5.97E24 (or 5.97e24). Note that the number will appear with every its zeroes if lock fit top top the screen. For example, if you key in 1.2 EE 5, the display will display 120,000.
Most scientific calculators dedicate a special key to Euler"s number, because it is just one of the most essential irrational number in mathematics and enters right into all type of scientific calculations. This is the "e" key. Press it, and Euler"s number will appear in your display screen to the accuracy the display allows. The clinical calculator on one iPhone, for example, mirrors 2.718281828459045. In addition, many calculators likewise have one "ex" key. Enter a number, press this key and the display will present the value of e elevated to the exponent girlfriend entered. In neither of these situations does "e" have the same meaning as the does once it shows up in the display.
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Chris Deziel stop a Bachelor's degree in physics and also a Master's level in Humanities, He has taught science, math and English in ~ the college level, both in his aboriginal Canada and also in Japan. He began writing virtual in 2010, offering details in scientific, social and handy topics. His creating covers science, math and also home advancement and design, and religion and also the oriental healing arts.