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1. x = √3 - 1/x হলে, x3 + 1/x3 এর মান কত?
- A. 0
- B. 0
- C. 0
- D. 0
Answer: Option A
Explanation:
x = ✓3 - (1/x)
= > x + (1/x) = ✓3
এখন, x³ + (1/x³) = {x + (1/x)}³ - 3.x.(1/x){x + (1/x)}
= (✓3)³ - 3✓3
= 3✓3 - 3✓3
= 0
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1. x = √3 - 1/x হলে, x3 + 1/x3 এর মান কত?
Answer: Option A
Explanation:
x = ✓3 - (1/x)
= > x + (1/x) = ✓3
এখন, x³ + (1/x³) = {x + (1/x)}³ - 3.x.(1/x){x + (1/x)}
= (✓3)³ - 3✓3
= 3✓3 - 3✓3
= 0
Post your comments here: