Dickson Hilton
03/02/2023 · Junior High School
4. Funksiyaning aniqlanish sohasini toping (5 ball) \[ y=\frac{\sqrt{2+x}}{5-x} \]
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Funksiyaning aniqlanish sohasini topish uchun, funksiyaning ta'riflangan bo'lishi uchun quyidagi shartlarni hisobga olishimiz kerak:
1. **Mantiqiy ifoda**: Funksiyaning nomi ostida joylashgan ifoda (bu holda \(\sqrt{2+x}\)) musbat bo'lishi kerak, ya'ni:
\[
2 + x \geq 0
\]
Bu shartni yechamiz:
\[
x \geq -2
\]
2. **Bo'linishdan qochish**: Funksiyaning denominatori (bu holda \(5 - x\)) nolga teng bo'lmasligi kerak, ya'ni:
\[
5 - x \neq 0
\]
Bu shartni yechamiz:
\[
x \neq 5
\]
Endi, ikkita shartni birlashtiramiz:
- \(x \geq -2\)
- \(x \neq 5\)
Shu bilan, funksiyaning aniqlanish sohasini quyidagicha yozishimiz mumkin:
\[
x \in [-2, 5) \cup (5, +\infty)
\]
Demak, funksiyaning aniqlanish sohasini topdik: \([-2, 5) \cup (5, +\infty)\).
Quick Answer
Funksiyaning aniqlanish sohasi: \([-2, 5) \cup (5, +\infty)\).
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