Maple , student.
Doubleint(f(x, y), D), D , :
x=1..2, y=y1..y2, 1, 2, y1, y2 ;
x=f1(y)..f2(y), y=y1..y2, f1(y), f2(y) - , y1 y2;
x=1..2, y=g1(x)..g2(x), g1(y), g2(y) - , 1 2.
Tripleint(f(x, y, z),x, y, z, V), V .
. , value(%).
int, ,
> Int(Int(y^3/(x^2+y^2),x=0..y),y=2..4)=int(int(y^3/(x^2+y^2), x=0..y),y=2..4);
, .
D :
> restart: with(student):
> J:=Doubleint(sin(x+2*y), x=y..Pi/2-y, y=0..Pi/2);
> J:=value(%);
.
> J:=Tripleint(4+z, z=0..2, y=x^2..1,x=-1..1);
> J:=value(%);
linalg. with(linalg).
Maple matrix(n, m, [a11,a12,,a1n, a21,a22,,a2m,, an1,an2,,anm]]), n - , m . n, m , . :
> A:=matrix(2,3,[1,2,3,-3,-2,-1]);
, :
1) evalm(A+B)
2) matadd(A,B).
:
1) evalm(A&*B);
2) multiply(A,B).
.
> A:=matrix([[1,0],[0,-1]]);
> B:=matrix([[-5,1], [7,4]]);
>v:=vector([2,4]);
>multiply(A,v);
>multiply(A,B);
>matadd(A,B);
evalm . :
> :=matrix([[1,1],[2,3]]):
>evalm(2+3*);
det(A). minor(A,i,j) , i - j - . Mij aij det(minor(A,i,j)). rank(A). , , trace(A).
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>K:=matrix([[4,0,5],[0,1,-6],[3,0,4]]);
>det(K);
>minor(K,3,2);
>det(%);
-24
>trace(K);
-1, -1 = -1= , - , :
1) evalm(1/A);
2) inverse(A).
. '. ' transpose(A).
, K, :
>inverse(K);
>multiply(K,%);
>transpose(K);
linalg , solve() . MX=B, M , X , linsolve(M,B).
>with(linalg)
>A:=matrix(2,1,[9,12])
>B:=matrix(2,2,[5,2,2,5])
BX=A:
>linsolve(B,A)
: x=1, y=2.
, =l , , l , . . k , , k.
eigenvalues(A). eigenvectors(A). , .
, eigenvectors, : 3 : , 1, , 1, , 1. Maple:
> A:=matrix([[3,-1,1],[-1,5,-1],[1,-1,3]]):
> eigenvectors(A);
[2,1,{[-1,0,1]}], [3,1,{[1,1,1]}], [6,1,{[1,-2,1]}]
, , .
A charpoly(A,lambda).
:
1) gausselim(A) ;
2) ffgausselim(A) . , , ;
3) gaussjord(A) -.
charmat(A,lambda).
. .
> U:=matrix([[3,2-I],[2+I,7]]):
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> eigenvectors(U);
,
. , .
> A:=matrix([[1,-3,4],[4,-7,8],[6,-7,7]]):
>g:=gausselim(A);
>g:=ffgausselim(A);
>F:=charmat(A,lambda);
x+iy x+I*y,
>2+6*I
Re(), Im(). ,
>Re(2+6*I)
>Im(2+6*I)
conjugate().
>conjugate(2+6*I)
abs() argument().
>abs(2+6*I)
>argument(2+6*I)
polar():
>polar(2+6*I)
, , .
, , evalc().
>evalc(cos(2+6I))
>evalc(exp(2+6I))
evalc .
>evalc((-1)^(1/4))