## 30 Reputation

3 years, 324 days

## How to delete some columns?...

Maple

dear all

how do i do for deletion of some columns? example:

A:=Matrix([[1,2,3],[4,5,6],]);

change to this: A:=Matrix([[1,2],[4,5]]).

i have a Matrix 8*12 and i want change it to 8*8

plz help me.

## Eigenvalues and eigenvectors of matrix...

Maple

daer all

how can i calculate eigenvalue and eigenvectors for a big Matrix?

example Matrix 12*12.

thank you

## Matrix in Matrix...

Maple

@Carl Love @Markiyan Hirnyk

i have this Matrix: A:=Matrix([[Matrix[[a,b],[c,d]]], [Matrix[[e,f],g,h]] ])

i want this Matrix change to: A:=Matrix([[a,b,e,f],[c,d,g,h]])

help me plz

thank you

## plot y[a],y[b],y[c] vs x....

dear all

(1-pi*x/2)y[b]-1/3=int(t^4/sqrt((t^2-y[b])^2+y[a]^2),t);

x^2*y[c](1-pi*x/2)-1/3=int(t^4/sqrt((t^2-x^2*y[c])^2+y[a]^2),t);

i want to plot y[a],y[b],y[c] vs x.

plz help me.

thank you

## How to change Matrix output?...

Maple

dear all

how Matrix(2, 2, [a,b,c,d]) change to:

a b

c d

without [] !

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