complex-numbers

I have here a code that should print the sum and difference of two complex numbers. The instructions given are: make the methods add , subtract , and print to be void and test using the constructor's object. public class Complex { /** * @param args */ public double real; public double imag; public String output = ""; public Complex(double real, double imag){ this.real += real; this.imag += imag; } public Complex(){ real = 0; imag = 0; } public double getReal(){ return real; } public void setReal(double real){ this.real = real; } public double getImag(){ return imag; } public void setImag

Given is the equation: Y^2 = X^3 + 2*X - 3*X*Y Assuming the plotted sketch is correct. Y^2 = X^3 + 2*X - 3*X*Y Hint: Y^2 + X^2 =1 ==> Y= sqrt( 1 - X^2 ) The X values are known. How can I find the corresponding Y values for X values? E.g. for known X-Values, I expect something like below listed Y-Values (see the plotted sketch): X= 1 ; Y=0.79 X=2 ; Y=1.58 X=3 ; Y=2.79 X=4 ; Y=4.39 X=5 ; Y=6.33 X=6 ; Y=8.57 X=7 ; Y=11.12 X=8 ; Y=13.92 X=9 ; Y=16.98 X=10 ; Y= 20.29 E.g. I will try to find Y for X=6; then Y will be calculated as follws: Y^2+X^2=1 ==> Y=sqrt(1 - X^2) = sqrt(1-36) = sqrt(-35) = (0,

Notes: I am compiling on OSX using Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn) Specifically, I am trying to compile a monolithic source from LibIIR, a filter library maintained here by Laurence Withers. I've already looked at this answer here about using both <complex> and <complex.h> in the same file . Setup: I have a file iir.h like so: #include <complex.h> #ifdef __cplusplus extern "C" { #endif ... I have C++ source and header files libiir++.cpp and iir++.h like so: /*** libiir++.cpp ***/ // we need to include "iir.h" first, as it pulls in <complex.h>, which we need // to

I am writing a program in Processing that transforms complex numbers. However, I want to have a method of taking an input string and calculating the transformation using a complex variable. For example: 1/(z+1) (z^2)/(z/2) where z is a complex number. Now, I've looked at JEP and some examples , but I cannot work out if it would allow you to actually enter z as a variable (and in any case it is not free). Is there an expression parser for Java (that works in processing, which uses an old version of java and does not have generics) that I could use to do this? If there is not, could someone

I need to write and read complex numbers. I would like to use numpy.savetxt and numpy.loadtxt to do so. Since the code that I have written is rather big I created a test file to try to write and read complex numbers. So far I have been able to write complex numbers using numpy.savetxt . The code is the following: import numpy d1 = -0.240921619563 - 0.0303165074169j d2 = -0.340921619563 - 0.0403165074169j d3 = -0.440921619563 - 0.0503165074169j d4 = -0.540921619563 - 0.0603165074169j array = numpy.array([d1, d2, d3, d4]) save = open("test.dat", "w") numpy.savetxt(save, array.reshape(1, array

I attempt the following: let c x = System.Numerics.Complex(x, 0.0) let sum = [c 1.0; c 2.0] |> List.sum But I get this error: The type 'System.Numerics.Complex' does not support the operator 'get_Zero' I read the rules on type extensions, from https://msdn.microsoft.com/en-us/library/dd233211.aspx , and try to do the following: module ComplexExtension = let c x = System.Numerics.Complex(x, 0.0) type System.Numerics.Complex with // I also tried a bunch of other ways of writing these // as static or instance members, but nothing worked static member Zero = c 0.0 static member One = c 1.0 open