Unanswered Questions

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Dear all, 

I ran these commands in Maples:

restart:

x:=Matrix([[x1],[x2]])

W:=<<w11 | w12>, <w21 | w22>>

v:= (W.x)
f:=(W.x)^%T.(W.x);

eq1:=<seq(diff(f,t),t=x)>;

eq2:=2*W^%T.v;
seq(is(eq1[i] = eq2[i]), i=1..numelems(eq1))
Then, I got this answer:

false, false

However, eq1 is the same as eq2, thus I expected to get 'true,true'. 

Would you tell me what went wrong?

Thank you

question2.mw

 

Dear all, 

I did these commands in Maple:

restart:
x:=Matrix([[x1],[x2]])

W:=<<w11 | w12>, <w21 | w22>>

v:= (W.x)

<seq(diff(v,t),t=W)>;

Then, the answer was this:

Vector[column](8, [x1, 0, 0, x1, x2, 0, 0, x2])

What I expected was this: