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How to find the antilog on a calculator

Updated April 17, 2017

The antilog is the inverse, or opposite, of a logarithm. Basic calculators will not have a button for the antilog. This function is usually only available on a scientific calculator. If your calculator doesn’t have many buttons, chances are, you won’t be able to find the antilog. Scientific calculators have many buttons and each button will have several different functions. The main function of each button is printed directly onto it. Secondary functions will be written on the back panel either immediately above or below the button. Some calculators have so many functions that they may have more than one secondary function per button. In this case, the colour of the writing of the function dictates which button you need to press first to access it. This may be a “Func,” “Inv” or “Shift” button.

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  1. Look at the label of each button. This will be stamped directly onto the button. You need to find a button that says “LOG-1,” “10x,” or “ALOG.”

  2. Look at the secondary functions of each button if your calculator, if you do not see a specific antilog key. If you find the symbol printed above or below a button, check out the colour of the text, because this will tell your which button you need to press first to access the function. The shift/function keys are usually colour coded. Press the access button and then press the button to which the antilog symbol relates.

  3. Try guessing a combination if the antilog symbol does not appear on your calculator. If you have an “Inv” button and a “LOG” button, then press these two button in sequence to see if this will give you the inverse of a logarithm, which is an antilog.

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About the Author

Stephen Byron Cooper began writing professionally in 2010. He holds a Bachelor of Science in computing from the University of Plymouth and a Master of Science in manufacturing systems from Kingston University. A career as a programmer gives him experience in technology. Cooper also has experience in hospitality management with knowledge in tourism.

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