Question

Даны векторы a(-2;3) и b(-4;-5).Найдите a+2b

Answer 1

Ответ:

(-10; -7)

Объяснение:

a(-2;3) и b(-4;-5)

a+2b=(-2;3)+2(-4;-5)=(-2;3)+(2*(-4);2*(-5))=(-2;3)+(-8;-10)=

=(-2+(-8); 3+(-10)=(-10; -7)

Answer 2

To find the result of the vector expression a + 2b, you need to perform vector addition. Vector addition is carried out by adding corresponding components of the vectors.

Given vectors: a = (-2, 3) b = (-4, -5)

To calculate a + 2b, you first multiply vector b by 2 and then add the resulting vector to vector a:

2b = 2 * (-4, -5) = (-8, -10)

Now, perform vector addition:

a + 2b = (-2, 3) + (-8, -10) = (-2 + (-8), 3 + (-10)) = (-10, -7)

So, the result of a + 2b is (-10, -7).