1 . f ( x ) = √ 4 − x 2 হলে f এর রেঞ্জ কত?
- A. − 2 ≤ x ≤ 0
- B. 0 ≤ x ≤ 2
- C. − 2 ≤ x ≤ 2
- D. − 4 ≤ x ≤ 4
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