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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-sin-transpose

if get('itensor,'vers...

imetric(g);

h: matrix([1,r,r*sin(...

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ident

I3: ident(2);

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

M.I2;

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ident

I3:ident(3);

I3*4;

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

Calculate

ident

I2: ident(2);

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

M.I2;

Calculate

ident-invert

invert(s*ident(2)-A);

Calculate

ident

I3:ident(3);

I2:ident(2);

Calculate

ident

I2: ident(2);

M: matrix[ [1,0] ,[3,...

M.I2;

Calculate

ident

I2: ident(2);

m: matrix[ [1,0], [3,...

m.I2;

Calculate

ident-matrix-sqrt-transpose

e:matrix([1/sqrt(3),1...

A:ident(3)-2/3*transp...

x1:A.transpose(matrix...

Calculate

ident-invert-matrix-ratsimp

A:matrix([1,2],[3,4]);

b:matrix([1],[2]);

c:matrix([2,1]);

Calculate