![]() This might change in a future version of SpeedCrunch. Since the current unit system does not support non-linear units like ☌ or ☏, the only available unit for temperature quantities is kelvin. Currently, the available dimensions and their associated primitive units are: For instance if you type meter^2, the result will be a quantity with the dimension length 2 which can only be compared to other quantities with the same dimension. When adding, multiplying, or otherwise manipulating units, SpeedCrunch will track the dimension and raise an error if it detects an invalid operation. ![]() Indeed, the dimension of second is time, while meter denotes a length, thus they cannot be compared, added, etc. Simply put, it prevents comparing apples and pears: If you try to convert seconds to meters, SpeedCrunch will complain, stating that the dimensions of second and meter do not match. The order explicit by using newton / (centi meter).įor the same reasons, expressions like 500 gram / 20 gram and (500 gram) / (20 gram) yield different results.Īn important feature of SpeedCrunch’s unit system is dimensional checking. ‘newtons per centimeter’, don’t simply type newton / centi meter – this will be interpreted as (newton / centi) meter! Instead, make For instance, if you intend to express the unit Means that their use follows the same rules of precedence as any other mathematical operation. This limitation (or feature, depending on your point of view) In SpeedCrunch (unlike in textbook notation), prefixes can be used on their own. In that case, the imaginary part of these numbers is discarded when passing them as an argument to a built-in function. However, previously stored variables may still contain complex values. sudo dnf install SpeedCrunch-0.12-linu圆4.rpm 32-bit. When complex numbers are disabled, the constant j is not available. Now that the SpeedCrunch RPM package file is downloaded, it can be installed using the dnf install command. However, when given a real argument, cbrt() will always return the real cubic root, regardless of whether or not complex numbers are enabled. With complex number support enabled, the power operation x^(1/3) will return the first complex cubic root of x which is usually non-real. Refer to a function’s documentation for more information.Ĭaution is advised when using functions like cbrt() or any fractional power operation with complex numbers. Not every function in SpeedCrunch supports complex arguments. ![]() Simply defining i=j allows you to use i as an alias for j. Although SpeedCrunch does not support this notation by default, it is added easily enough. It features a syntax-highlighted scrollable display and is designed to be fully used via keyboard. Some users (especially mathematicians or physicists) may prefer to use the letter i for the imaginary unit. SpeedCrunch is a high-precision scientific calculator. If necessary, consider writing the multiplication explicitly, i.e. SpeedCrunch supports the following operators, listed in order of decreasing precedence: OperatorĮxponentiation Both variants are equivalent.J ^ 2 = -1 ( 5 + 3 j ) / ( 8 - 2 j ) = 0.5+0.5jĪ note on the syntax of complex numbers: 5j denotes the number 5*j while j5 is a variable named ‘j5’. We also distinguish unary operators (which act on a single number/operand) and binary operators (which link two operands). When writing an expression like 10+5*4, which operation will be executed first? The common rules of operator precedence tell us that in this case multipication shall be computed first, hence the result is 30. However, only about 78 significant digits are stored at any point. the part preceding the exponent) is required exactly one exponent must be specified.Ĭompared to most calculators, SpeedCrunch can accept very large numbers without overflowing (e.g. If the sign is ‘+’, you may simply omit it: e0, E10. So e+10, e-4, E-0 are all valid scale expressions. The scale of a number (sometimes called its exponent) always begins with the scale character E or e followed by a signed integer. Here, the e represents *10^, but it is considered a part of the number literal and treated with higher precedence. Naturally, in SpeedCrunch this could be written as 1.234*10^-9, but there’s also a shorthand notation: 1.234e-9. These are more commonly expressed in scientific notation for instance, 1.234*10 -9 is preferable to 0.000000001234. When dealing with very small or very large numbers (think the size of an atom or of a galaxy) the notation above is inconvenient.
0 Comments
Leave a Reply. |