Hewlett-Packard Corporation joined the market in early 1972 with the HP-35 scientific calculator. It could not only add, subtract, multiply, and divide but compute trigonometric functions, logarithms, ...

He then went into the arithmometer, which is arguably the first commercially successful mechanical calculator with four functions. That was around 1821 or so. But [Dan] mentions it used a Leibniz ...

there are 240 kinds of integrated functions for our black scientific calculators, including percentages, trigonometry, 24 parentheses levels, summation, regressions, fractions, regressions ...

Some "complex" calculators may look like they do everything you need, but they might lack a specific function. And some are less complicated than others. High-school math students will likely need ...

Since no one is likely to build an arcade cabinet version of a TI-89, all of these retro calculators are instead emulated entirely within a browser. This includes working buttons and functions on ...

graphing calculators or statistical software packages are required to calculate a probability density function. You should note that investment returns are rarely, if ever, normally distributed ...

Authors should provide at the time of submission a short paragraph explaining why their work justifies urgent publication as a Communication. Ideally, a Full paper in Food & Function should follow ...

Use this free mortgage calculator to estimate your monthly mortgage payments and annual amortization. Property taxes The annual tax that you pay as a property owner, levied by the city ...