In the calculator app, you can perform basic arithmetic calculations with the standard calculator. "Or use the scientific calculator for exponential, logarithmic, and trigonometric functions ...

THE first portion of this book treats of the way to use logarithms so as to apply no more figures than necessary; the author pointing out that probably one half of the time expended in ...

News Published: 23 February 1899 To Calculate a Table of Logarithms JOHN PERRY Nature 59, 393 (1899) Cite this article ...

The iPhone's scientific calculator provides exponential, logarithmic and trigonometric functions. It even has some hidden functions that reveal themselves if you hit the button that reads ‘2nd'.