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Merge pull request #102 from nyarly/ans-help

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Help text for ans variable
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PaddiM8 2022-09-30 12:02:14 +02:00 committed by GitHub
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@ -15,7 +15,7 @@ Overview of features
Different number bases: Either with a format like 0b1101, 0o5.3, 0xff
or a format like 1101_2. The latter does not support letters, as they
would be interpreted as variables
would be interpreted as variables
Root finding using Newton's method (eg. x^2 = 64). Note: estimation and
limited to one root
@ -23,7 +23,7 @@ Overview of features
Derivation (prime notation) and integration (eg. integral(a, b, x dx)
The value of an integral is estimated using Simpson's 3/8 rule,
while derivatives are estimated using the symmetric difference
quotinent (and derivatives of higher order can be a bit inaccurate as of now)
quotient (and derivatives of higher order can be a bit inaccurate as of now)
Syntax highlighting
Completion for special symbols on tab
@ -67,11 +67,14 @@ Variables
Variables are defined with the following syntax: name = value
Example: x = 3/4
Predefined variables
ans - receives the value computed of the most recent expression
Functions
Functions are defined with the following syntax: name(param1, param2, etc.) = value
Examples: f(x) = 2x+3; A(x, y) = (xy)/2
They are used like this: name(arg1, arg2, etc.)
Example: f(3) + 3A(2, 3)
Example: f(3) + 3A(2, 3)
Predefined functions
sin, cos, tan, cot, cosec, sec
@ -123,11 +126,11 @@ Vectors
gives the result (1, 2, 4). An exception to this is multiplication with two vectors,
for which the result is the dot product of the vectors. When a vector is given to a
regular function, the function is applied to all of the items in the vector.
Indexing
A specific item can be retrieved from a vector using an indexer, with the
syntax vector[[index]]. Indexes start at 1.
Vector comprehensions (experimental)
Vectors can be created dynamically using vector comprehension notation, which is
similar to set-builder notation. The following example creates a vector containing
@ -145,9 +148,9 @@ Matrices
possible to press the enter key to create a new row, instead of writing a semicolon. Pressing
enter will not submit if there is no closing square bracket. Operations on matrices work the
same way as with vectors, except that two matrices multiplied result in matrix multiplication.
It is also possible to obtain the tranpose of a matrix with the syntax A^T, where A is a matrix
It is also possible to obtain the transpose of a matrix with the syntax A^T, where A is a matrix
and T is a literal T.
Indexing
A specific item can be retrieved from a matrix using an indexer, with the
syntax matrix[[rowIndex, columnIndex]]. Indexes start at 1.
@ -161,4 +164,4 @@ Files
If a file with the name default.kalker is found, it will be loaded automatically every time
kalker starts. Any other files in this directory with the .kalker extension can be loaded
at any time by doing load filename in kalker. Note that the extension should not be included here.
at any time by doing load filename in kalker. Note that the extension should not be included here.