Question

Найти D (f) ​

Answer 1

Объяснение:

а)

$\sqrt{ - x ^{2} + 4 } = 0 \\ - x ^{2} + 4 = 0 \\ x ^{2} = 4 \\ x = 2 \\ x = - 2$

б)

Answer 2

I see you have mentioned "D (f)" without specifying what "D" and "f" represent. In mathematics, "D" can represent various things, such as derivatives, differential operators, or even matrices, depending on the context. Similarly, "f" could represent a function, variable, or other mathematical entities.

To help you find D (f), please provide more context and clarify what "D" and "f" stand for in your equation or problem. Once you provide more information, I'll be happy to assist you further.