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Question 17 and 18, Exercise 4.7
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rm: $2^{2}+5^{2}+8^{2}+\ldots$ ** Solution. ** <callout type="tip" title="Rough Work" icon="true"> Take $... kth term of given series by just taking square. </callout> Consider $T_k$ represents the $k$th term of th... $n$ term: $2^{2}+4^{2}+6^{2}+$ ** Solution. ** <callout type="tip" title="Rough Work" icon="true"> Take $... kth term of given series by just taking square. </callout> Consider $T_k$ represents the $k$th term of th
Question 21 and 22, Exercise 4.7
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2 \times 7+3 \times 10+\cdots$ ** Solution. ** <callout type="tip" title="Rough Work" icon="true"> Take $... is $k$. So we have required kth term $k(3k+1)$. </callout> Consider $T_k$ represents the $k$th term of th... \times 9+\cdots$ to $n$ term. ** Solution. ** <callout type="tip" title="Rough Work" icon="true"> Take $... us required kth term is $(2k-1)(2k+1)(2k+3)$.\\ </callout> Consider $T_k$ represents the $k$th term of th
Question 14 and 15, Exercise 4.2
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mplies & b = 0 \end{align*} Hence $b = 0$. GOOD <callout type="warning" icon="true"> To get the answer giv... nd '$b$' if $10$ is A.M between $b$ and $-10$. </callout> =====Question 15===== Find $x$ and $y$ if $2$ an
Question 20 and 21, Exercise 4.4
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e $6$, $12$, $24$ are required geometric means. <callout type="warning" icon="true"> **The good solution i... -6$, $12$, $-24$ are required geometric means. </callout> =====Question 21===== Find the missing geometri
Question 30, Exercise 4.4
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e river will rise 81 inch after five days. GOOD <callout type="warning" icon="true"> If one conclude that ... five days will be $$S_n=a_1+a_2+a_3+a_4+a_5.$$ </callout> ====Go to ==== <text align="left"><btn type="p
Question 19 and 20, Exercise 4.7
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$n$ term: $1^{3}+3^{3}+5^{3}+$ ** Solution. ** <callout type="tip" title="Rough Work" icon="true"> Take $... kth term of given series by just taking square. </callout> Consider $T_k$ represents the $k$th term of th
Question 19 and 20, Exercise 4.7
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$n$ term: $1^{3}+3^{3}+5^{3}+$ ** Solution. ** <callout type="tip" title="Rough Work" icon="true"> Take $... kth term of given series by just taking square. </callout> Consider $T_k$ represents the $k$th term of th