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maple 9.5 help


oxide

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το προβλημα ειναι το εξης

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

[-1 2 4]

[ ]

a := [ 1 -5 -3]

[ ]

[ 1 -2 6]

> b:=Matrix([[1,-2,3],[1,-4,2],[1,-1,4]]);

[1 -2 3]

[ ]

b := [1 -4 2]

[ ]

[1 -1 4]

> c:=Matrix([[1,0,0],[0,1,0]]);

[1 0 0]

c := [ ]

[0 1 0]

> matrix([[10, 0], [0, 10]]);

[10 0]

[ ]

[ 0 10]

> f:=x->a*x^3+b*x^2+c*x+4;

3 2

f := x -> a x + b x + c x + 4

> ex_1:=f(1)=8;

Error, (in rtable/Sum) invalid arguments

> ex_2:=f(2)=0;

Error, (in rtable/Sum) invalid arguments

> ex_3:=f(3)=-1;

Error, (in rtable/Sum) invalid arguments

> solve(ex_1,ex_2,ex_3),(a,b,c);

Error, (in solve) invalid arguments

δεν μπορω να καταλαβω τι φταιει...ευχαριστω.:tomato:

υγ..εχουν παραμορφωθει λιγο ...αλλα δεν νομιζω να υπαρχει προβλημα.

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