Виберіть характеристики ряду Коропоподібні Cypriniformes:
Визначте представників дводишних:
Виберіть характеристики надряду Акули Selachomorpha:
Let be a vector space and two families of vectors of . Denote by and and consider the following propositions:
: " is a basis of ''
: " and are supplementary in ".
Then, we have
Let be the vector space of all sequences. Denote by the set of all arithmetic sequences and by the set of all geometric sequences. Then
Consider the polynomials , , . We admit that the family is a basis of . Then, the coordinates of in the basis are: