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The Maxima on-line user's manual

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Ident

Function: ident (<n>) Returns an <n> by <n> identity matrix.

n : matrix ([a[11], a[12]], [a[21], a[22]]);
p_n : determinant (x * ident(2) - n), expand;
at (x . x - a[22]*x - a[11]*x + a[11]*a[22] - a[12]*a[21], [x = n]);

There are also some inexact matches for ident. Try ?? ident to see them.

(%o1)                                true
(%i2) 

Related Examples

ident-matrix

A:matrix([2,-1,2],[5,...

B:ident(3);

C:A-B;

Calculate

ident-transpose

I2:ident(2);

M:matrix[[1,2,x],[0,x...

W:transpose(M);

Calculate

ident-transpose

I3:ident(3);

I3*4;

M: matrix[[1,0],[3,5]];

Calculate

ident

i3:ident(3);

i3*4;

Calculate

ident-invert-kill-matrix

kill(all);

A: matrix([0.3, 0.1, ...

D: matrix([260], [520...

Calculate

ident

I2:ident(2);

M:matrix[[1,0],[3,5]];

M.I2;

Calculate

ident-matrix

A:matrix([2/5,1/3,1/2...

p:matrix([p1],[p2],[p...

M:ident(3)-A;

Calculate

ident-matrix-ratsimp

ip: matrix([a,-b],[b,...

ident: matrix([ 1, 0]...

ro090: matrix([ 0,-1]...

Calculate

ident-matrix

A:matrix([5,-3,2],[6,...

I:ident(3);

B:A-x.I;

Calculate

ident

I2: ident(2);

M:matrix[[1,0],[3,5]];

Calculate