Craig Todd
06/17/2024 · Middle 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 qanday shartlar bajarilishi kerakligini aniqlashimiz kerak.
Berilgan funksiya:
\[
y = \frac{\sqrt{2+x}}{5-x}
\]
1. **Mantiqiy shartlar**:
- **Kvadrat ildiz**: \(\sqrt{2+x}\) ifodasi aniqlanishi uchun, uning ichidagi ifoda nolga teng yoki musbat bo'lishi kerak:
\[
2 + x \geq 0 \implies x \geq -2
\]
- **Mantiqiy bo'linma**: \(\frac{1}{5-x}\) ifodasi aniqlanishi uchun, bo'luvchi nolga teng bo'lmasligi kerak:
\[
5 - x \neq 0 \implies x \neq 5
\]
2. **Aniqlanish sohasini birlashtirish**:
- \(x \geq -2\) sharti va \(x \neq 5\) shartini birlashtiramiz.
- Shunday qilib, aniqlanish sohasi \(x\) uchun quyidagicha bo'ladi:
\[
x \in [-2, 5) \cup (5, +\infty)
\]
Demak, funksiyaning aniqlanish sohasini quyidagicha yozishimiz mumkin:
\[
[-2, 5) \cup (5, +\infty)
\]
Quick Answer
Funksiyaning aniqlanish sohasi: \([-2, 5) \cup (5, +\infty)\)
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