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scalarp

Run Example
(%i1)declare(a,scalar);
(%o1)                                done
(%i2) scalarp(a);
(%o2)                                true
(%i3) scalarp(X);
(%o3)                                false
(%i4) scalarp(T12);
(%o4)                                false
(%i5) scalarp(S);
(%o5)                                false
(%i6) a*S-S*a;
(%o6)                                  0
(%i7) I(X):=(X^^(-1));
                                         <- 1>
(%o7)                           I(X) := X
(%i8) T(X):=X.I(T12).T14c.I(T14e).T12.I(X).T14e;
(%o8)  T(X) := X . (I(T12) . (T14c . (I(T14e) . (T12 . (I(X) . T14e)))))
(%i9) limit((1/a)*(T(T12+a*S)-T(T12)),a,0);
                               <- 1>              <- 1>
(%o9) limit  ((T12 + a S) . T12      . T14c . T14e      . T12
      a -> 0
                                                         <- 1>
                                            . (T12 + a S)      . T14e - T14c)/a
(%i10) 
Run Example
declare(a,scalar);
(%o1)                                done
(%i2) scalarp(a);
(%o2)                                true
(%i3) scalarp(X);
(%o3)                                false
(%i4) scalarp(T12);
(%o4)                                false
(%i5) scalarp(S);
(%o5)                                false
(%i6) I(X):=(X^^(-1));
                                         <- 1>
(%o6)                           I(X) := X
(%i7) T(X):=X.I(T12).T14c.I(T14e).T12.I(X).T14e;
(%o7)  T(X) := X . (I(T12) . (T14c . (I(T14e) . (T12 . (I(X) . T14e)))))
(%i8) limit((1/a)*(T(T12+a*S)-T(T12)),a,0);
                               <- 1>              <- 1>
(%o8) limit  ((T12 + a S) . T12      . T14c . T14e      . T12
      a -> 0
                                                         <- 1>
                                            . (T12 + a S)      . T14e - T14c)/a
(%i9) 
Run Example
declare(a,scalar);
(%o1)                                done
(%i2) scalarp(a);
(%o2)                                true
(%i3) scalarp(X);
(%o3)                                false
(%i4) scalarp(T12);
(%o4)                                false
(%i5) scalarp(S);
(%o5)                                false
(%i6) I(X):=(X^(-1));
                                          - 1
(%o6)                            I(X) := X
(%i7) T(X):=X*I(T12)*T14c*I(T14e)*T12*I(X)*T14e;
(%o7)             T(X) := X I(T12) T14c I(T14e) T12 I(X) T14e
(%i8) limit((1/a)*(T(T12+a*S)-T(T12)),a,0);
(%o8)                                  0
(%i9) 

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