0 reads0 ratings0 helpful
If (a_n=n^3+n), what is (a_4)?यदि (a_n=n^3+n) है, तो (a_4) क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 6868
Given \(a_n=n^3+n\), substitute \(n=4\) to find the fourth term: \(a_4=4^3+4=64+4=68\). Therefore, 68 is correct. The value 64 is only \(4^3\); the additional \(+4\) must also be included. Exam tip: To find a particular term, substitute its index into the given formula before simplifying.दिया है कि \(a_n=n^3+n\)। \(a_4\) ज्ञात करने के लिए \(n=4\) रखें: \(a_4=4^3+4=64+4=68\)। इसलिए सही उत्तर 68 है। 64 केवल \(4^3\) का मान है; उसमें \(+4\) जोड़ना भी आवश्यक है। परीक्षा टिप: पद ज्ञात करते समय पहले दिए गए सूत्र में सूचकांक का मान रखें, फिर गणना करें।
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.
