Maxima

630阅读 0评论2011-09-08 zzggbb
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is an open source computer algebra system. It has its origins in Macsyma in the late 1960s at . Macsyma was the first of a new breed of computer algebra systems, leading the way for programs such as Maple, Matlab or Mathematica. Since 1998 the source code is released under GPL. A group of users and developers has formed to keep Maxima alive and kicking. Maxima itself is reasonably feature complete at this stage, with abilities such as symbolic integration, 2D and 3D plotting, as well as an ODE solver. You can also just use it as a calculator with arbitrary precision.

In Unix, you start Maxima by typing "maxima" at the command line. You quit it with 'quit();';
Number theory expand((x+y)^6);
factor(x^6-1);
factor(123412341231234);
factor(2^(2^5)+1);
100!;
bfloat(%pi);
block([fpprec:1000],bfloat(%pi));
cfdisrep([1,2,3,5,2]);
bfloat(%);
Programming for a:-3 thru 26 step 7 do ldisplay(a);

s:0; for i:1 while i<=10 do s:s+i; done; s;

fib[0]:0; fib[1]:1; fib[n]:=fib[n-1]+fib[n-2];
fib[20];
Plotting plot2d(sin(x)/x,[x,-5,5]);
plot3d(sin(sqrt(x^2+y^2))/sqrt(x^2+y^2),[x,-12,12],[y,-12,12]);
plot3d([cos(y)*(10.0+6*cos(x)),sin(y)*(10.0+6*cos(x)),-6*sin(x)],
[x,0,2*%pi],[y,0,2*%pi],['grid,40,40]);
plot3d([5*cos(x)*(cos(x/2)*cos(y)+sin(x/2)*sin(2*y)+3.0)-10.0,
-5*sin(x)*(cos(x/2)*cos(y)+sin(x/2)*sin(2*y)+3.0),
5*(-sin(x/2)*cos(y)+cos(x/2)*sin(2*y))],
[x,-%pi,%pi],[y,-%pi,%pi],['grid,40,40]);
plot2d(sec(x),[x,-2,2],[y,-20,20],[nticks,200]);
plot2d([parametric,cos(t),sin(t),[t,-%pi*2,%pi*2]]);
plot2d([x^3+2,[parametric,cos(t),sin(t),[t,-5,5]]], [x,-3,3]);
Differentiation and Integration diff(sin(x^2));
'integrate(%E**sqrt(a*y),y,0,4);
integrate(%E**sqrt(a*y),y,0,4);
integrate(sin(x),x);
sum((1/2)^i,i,0,inf);
laplace(delta(T-A)*sin(B*T),T,S);
Limits limit( (5*x+1)/(3*x-1),x,inf);
Ordinary differential equations depends(y,x);
diff(y,x)=(4-2*x)/(3*y^2-5);
ode2(%,y,x);
latex(%);
Solving linear equation linsolve( [3*x+4*y=7, 2*x+4*y=13], [x,y]);
eq1: x^2 + 3*x*y + y^2 = 0;
eq2: 3*x + y = 1;
solve([eq1, eq2]);
Working with matrices a: matrix([1,2],[3,4]);
b: matrix([2,2],[2,2]);
a.b;
h[i,j]:=1/(i+j);
a: genmatrix(h,3,3);
determinant(a);
b: matrix([2,3],[5,6]);
echelon(b);
invert(b);
eigenvectors(b);
Working with files load(file);
Interrupting computation factor(2^(2^7)+1);
c
MAXIMA>>:q
Quitting Maxima quit();


Mathematica - Maxima
Maxima Mathematica
plot2d( sin(x),[x,-5,5]);
Plot[Sin[x],{x,-5,5}]
plot3d( sin(x*y),[x,-3,3],[y,-3,3] );
Plot3D[Sin[x y],{x,-3,3},{y,-3,3}]
diff(cos(x)^5,x)
D[Cos[x]^5,x]
integrate(tan(x),x);
Integrate[Tan[x],x]
integrate(%e^(-x^2),x,minf,inf);
Integrate[Exp[-x^2],{x,-Infinity,Infinity}]
romberg(sin(cos(x)), x, 1, 3);
NIntegrate[Sin[Cos[x]],{x,1,3}]
limit((1+1/n)^n,n,inf);
Limit[(1+1/n)^n,{n ->Infinity}]
float(%e);
N[E,100]
factor(4 + 5*x + 5*x^2 + x^3);
Factor[4 + 5*x + 5*x^2 + x^3]
trigsimp(cos(x)^2+2*sin(x)^2);
TrigReduce[Cos[x]^2+2 Sin[x]^2]
tex(sin(x));
TeXForm[Sin[x]]
factor(132413241324123412341234);
FactorInteger[132413241324123412341234]
solve(x^3-3*x+1,x);
Solve[x^3- 3*x+1==0,x]
solve([x^2+2*x+y+3,x*y-3],[x,y]);
Solve[{x^2+2*x*y+3==0, x*y-3==0},{x,y}]
sum(k,k,1,n),simpsum;
Sum[k,{k,1,n}]
niceindices(powerseries(sin(x), x, 0));
Series[Sin[x],{x,0,10}]



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