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π,e, ln(2), ln(10) arbitrary precision
 
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Permission to use, copy, and distribute this software and It’s documentation for any non commercial purpose is hereby granted without fee, provided: THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL Henrik Vestermark, BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

Complex Expression Calculator:


Complex Expression Evaluator: vs. 1.6
Expression:
    Precision:
Result:
History:  
                  
Version 1.6: This web tool evaluates any real and complex expression. Besides the usual operators like +,-,*,/,%,^ you can also use the built in functions: abs, acos*, asin*, atan*, atan2*, ceil*, cosh, cos, exp, floor*, log, max*, min*, pow, random*, round*, sinh, sin, sqrt, tanh, tan.
*) marked are functions that only takes real arguments, all other takes real or complex arguments. e.g. sqrt(2-i2) evaluates to approx. (1.55+i0.64).
The operator ^ is the power operator. However it only takes an integer argument like the expression sqrt(2)^2. For more complex power operations use the general power function: pow() instead.
You can also assign expression to a variable: e.g. x=sqrt(2-i2)*3/4 and then used them later on. E.g. y=log(123.5)/x etc. In version 1.2 we have added functions. First you would need to define a function like in the following:
f(x)=2*sqrt(x)
and then just call then with a parameter e.g.: 3*log(f(4))
A function can also contains compound statements. e.g. f(x)={ x=2; y=3; z=5; } etc
You can have as many parameter as you like however number of parameter passed must match the definition of the functions.
Example: Durand-Kerner method on a polynomial f(x)=x^3-3*x^2+3*x-5
Add each line to the input field and it evaluate. Then type in next() and see the value of the roots for each iterations.
p=(0.4 + 0.9 i)^0, q=(0.4 + 0.9 i)^1, r=(0.4 + 0.9 i)^2
f(x)=x^3-3*x^2+3*x-5
next()={dp=f(p)/((p-q)*(p-r)); p=p-dp; dq=f(q)/((q-p)*(q-r));q=q-dq;dr=f(r)/((r-p)*(r-q));r=r-dr;}
If you refresh your browser or exit you loose all variables.
The Histroy section keeps track on your previous expression evaluations. Email me if you encounter any problems at hve@hvks.com
Corrections:
28-Oct-2009 Vs 1.5 Minor Exponent parsing problem corrected
18-Jul-2008 Vs 1.4 Works with IE7, FireFox 2 & 3
18-Jun-2008 Vs 1.3 Added Comma expression, Statements and compound statements
11-Jun-2008 Vs 1.2 Added support for define and calling user defined functions with zero or more parameters
10-Jun-2008 Vs 1.1 Added support for the assignment of variables
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