0 reads0 ratings0 helpful
If (s=2+\sqrt{7}), what is the value of (s^{2}-\frac{1}{s^{2}})?यदि (s=2+\sqrt{7}), तो (s^{2}-\frac{1}{s^{2}}) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (8\sqrt{7})(8\sqrt{7})
Here (\frac{1}{s}=\sqrt{7}-2), so (s-\frac{1}{s}=4) and (s+\frac{1}{s}=2\sqrt{7}). Thus (s^{2}-\frac{1}{s^{2}}=8\sqrt{7}).(\frac{1}{s}=\sqrt{7}-2), इसलिए (s-\frac{1}{s}=4) और (s+\frac{1}{s}=2\sqrt{7})। अतः (s^{2}-\frac{1}{s^{2}}=8\sqrt{7})।
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
