Tangent 2.2 manual Using the Expression Evaluator

Models: 2.2

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Click this button to enter the result value into the Calculator Readout for further calculations.

Cancel Button

Close this screen.

Make Topmost Window (Up Arrow button)

Click this button if you want this screen to "float on top" of all other windows.

There are 7 Intra-System Conversion modes. They are as follows:

Metric Units

exa, peta, tera, giga, mega, kilo, hecto, deka, deci, centi, milli, micro, nano, pico, femto, atto.

English Weights

Grain, Dram, Ounce, Pound, Stone, Hundred weight, Long hundred weight, Long ton, Short ton.

English Square (include English acres to Metric hectares conversion)

Sq. Inch, Sq. Foot, Sq. Yard, Sq. Rod, Acre, Sq. Mile, Hectare (metric).

English Cubic

Cu. Inch, Cu. Foot, Cord foot, Cu. Yard, Cord, US gallon, British gallon, US bushel, British bushel.

English Length

Mil, Inch, Link, Foot, Yard, Fathom, Rod, Chain, Furlong, Cable's length, Mile, Nautical mile, League

English Capacity

Fluid ounce, Gill, Pint, Quart, Gallon, Peck, Bushel

Computer Units

bit, nibble, byte, kilobit, kilobyte, megabit, megabyte, gigabyte, terabyte, pe- tabyte, exabyte, zettabyte, yottabyte.

Using the Expression Evaluator

The Scientific Expression Evaluator is used to obtain results from a complex or sim- ple mathematical expression. It follows the operator hierarchy and algebraic gram- mar rules. For example, in a standard calculator 2+2*3 would equal 12, but in an algebraic calculator that same expression would equal 8. This is because in a stan- dard calculator the expression is evaluated from left to right, but in an algebraic cal- culator, calculations follow the rules of algebra (operator hierarchy takes priority). In this particular case the first action would be multiplication and then addition. You must also remember that bracketed expressions and powers are calculated before anything else.

Operator Hierarchy:

1.Brackets [()]

2.Power [^]

3.Multiplication [*], Division [/], Remainder [\]

4.Addition [+] and Subtraction [-]

You can use all numbers [0 to 9] on the keyboard, as well as Other Valid Keys to enter your expressions. You can also use up to three Variables (X,Y & Z).

Enter your expression into the main Expression Readout box. (This is the box lo- cated to the left of the OK button.) You can either type your expression or paste it

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Tangent 2.2 manual Using the Expression Evaluator