Question

А(1;2) в(2;4) 2а-3в-? модуль 2а-3в-?

Answer 1

2а = (2 ; 4)
3в = (6 ; 12)
А модуль точно такой же, потому что даже если числа отрицательные модуль меняет их на положительные

Answer 2

Calculation of 2a - 3v

To calculate the expression 2a - 3v, where a = (1,2) and v = (2,4), we need to perform the following calculations:

2a = 2 * (1,2) = (2*1, 2*2) = (2,4) 3v = 3 * (2,4) = (3*2, 3*4) = (6,12)

Now, subtracting 3v from 2a: 2a - 3v = (2,4) - (6,12) = (2-6, 4-12) = (-4, -8)

Therefore, 2a - 3v = (-4, -8).

Calculation of the modulus of 2a - 3v

To calculate the modulus of 2a - 3v, we need to find the length or magnitude of the vector (-4, -8). The modulus of a vector can be calculated using the Pythagorean theorem.

The modulus of a vector (x, y) is given by the formula: √(x^2 + y^2).

For the vector (-4, -8), the modulus is calculated as follows: Modulus of (-4, -8) = √((-4)^2 + (-8)^2) = √(16 + 64) = √80 ≈ 8.94.

Therefore, the modulus of 2a - 3v is approximately 8.94.

Please note that the search results provided by You.com did not contain specific information related to the calculation of 2a - 3v or its modulus. The calculations provided above are based on mathematical principles and do not rely on external sources.