Question

Чому дорівнює скалярний добуток векторів а(2; -5) i b(1; -2)?​

Answer 1

Ответ: 12

Объяснение:

Скалярное произведение векторов- это  сумма произведений соответствующих координат. т.е.

→a*→b=2*1+(-5)*(-2)=2+10=12

Answer 2

Scalar Product of Vectors

The scalar product (also known as the dot product) of two vectors a and b, denoted as a · b, is given by the sum of the products of their corresponding components. For the vectors a(2, -5) and b(1, -2), the scalar product can be calculated as follows:

a · b = (2 * 1) + (-5 * -2)

This simplifies to:

a · b = 2 + 10

Therefore, the scalar product of the vectors a(2, -5) and b(1, -2) is:

a · b = 12