Question

Найдите область определения y. y=

Answer 1

Подкоренное выражение - число неотрицательное.
Составим и решим систему из двух неравенств:
x - 2 ≥ 0
x + 2 ≥ 0

x ≥ 2
x ≥ -2

Общим решением будет являться промежуток x ∈ [2; +∞).

Ответ: D(y) = [2; +∞). 

Answer 2

Finding the Domain of y

To find the domain of y, we need to determine the values of x for which the function is defined. Let's examine the given sources to find the domain of y.

Source provides an equation: y = lg(x^+7). However, the snippet does not provide complete information about the equation.

Source provides another equation: y = 10-7x+x^2. This equation is a quadratic equation.

Source provides yet another equation: y = v12-4x-x2/1-x. This equation is also a quadratic equation.

Source provides an equation: y = 3x+2. This equation is a linear equation.

Based on the information from the sources, we can conclude the following:

- The domain of y for the equation y = 10-7x+x^2 is all real numbers. - The domain of y for the equation y = v12-4x-x2/1-x is all real numbers except x = 1. - The domain of y for the equation y = 3x+2 is all real numbers.

Therefore, the domain of y depends on the specific equation being referred to. If you can provide more information about the equation you are referring to, I can provide a more specific answer.