ign*}
Hence $a_1=4$, $a_2=7$, $a_3=10$, $a_4=13$. GOOD
=====Question 1(ii)=====
Find the first four t... gn*}
Hence $a_1=7$, $a_2=12$, $a_3=17$, $a_4=22$. GOOD
=====Question 1(iii)=====
Find the first four... n*}
Hence $a_1=16$, $a_2=14$, $a_3=12$, $a_4=10$. GOOD
=====Question 1(iv)=====
Find the first four ... n*}
Hence $a_1=38$, $a_2=34$, $a_3=30$, $a_4=26$. GOOD
=====Question 1(v)=====
Find the first four
nd{align*}
Hence given sequence is not geometric. GOOD
**Alternative Method**
Given sequence is $5, ... t ratio.\\
Hence given sequence is not geometric. GOOD
=====Question 2=====
Determine whether each... t ratio.\\
Hence given sequence is not geometric. GOOD
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<text align="right"><btn type="success">[[math-11-nbf:sol:unit04
n*}
Hence $a_1=3$, $a_2=-6$, $a_3=12$, $a_4=-24$. GOOD
=====Question 6=====
Find the first four terms... gn*}
Hence $a_1=27$, $a_2=-9$, $a_3=3$, $a_4=-1$. GOOD
=====Question 7=====
Find the first four terms... gn*}
Hence $a_1=12$, $a_2=6$, $a_3=3$, $a_4=1.5$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-4-p2|< Questi
s $\sum_{n=1}^{\infty} T_{n}= \dfrac{n(n+3)}{2}$. GOOD
=====Question 15=====
Find the sum to $n$ term... imits_{k=1}^{n} T_{k} = \dfrac{n}{6}(2n^2+9n+7)$. GOOD
=====Question 16=====
Find the sum to $\boldsy... }^{n} T_{k} = \frac{n}{2}\left(2n^2+5n+5\right).$ GOOD m(
====Go to ====
<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-7-p6|<
3 = 3$, $a_4 = 8$, $a_{10} = 80$, $a_{15} = 195$. GOOD
=====Question 6=====
The $n$th term of the se... 0} = \frac{99}{101}$, $a_{15} = \frac{112}{113}$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-1-p2|< Quest
d{align*}
So, the general term is $a_n = 2n - 1$. GOOD
=====Question 20=====
Predict the general term... , we can predict the general term is $a_n = 3^n$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-1-p9|< Quest
end{align*}
Thus, we can predict $a_n=\sqrt{2n}$. GOOD
=====Question 22=====
Predict the general ... {align*}
Thus the general term is $a_n=1.1n+0.1$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-1-p10|< Que
(0.05)\\
&=0.57
\end{align*}
Hence $a_{11}=0.57.$ GOOD
=====Question 4=====
The third term of an arit... terms are $19, \dfrac{33}{2}, 14, \dfrac{23}{2}$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-2-p2|< Question
erms are $8, 5, 2, -1, -4$ and $a_1 = 8$, $d=-3$. GOOD
=====Question 6=====
The fifth term of an arith... d{align*}
Hence the $a_1 = 3$ and $a_{87} = 347$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-2-p3|< Question
\
\implies & n=20
\end{align*}
Hence $a_{20}=70$. GOOD
=====Question 8=====
Which term of the sequenc... 6
\end{align*}
Hence $a_{56} = -\dfrac{105}{2}$. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-2-p4|< Ques
ac}\\
&=\frac{a-c}{2ac}
\end{align*}
As required. GOOD
=====Question 10=====
During a free fall, a sky... diver will fall $240$ feet during the 8th second. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-2-p5|< Ques
total savings till August $20$ is Rs. $400,000.$ GOOD
=====Question 12=====
A gardener is making a tr... that is, $7$ plants will be there in the 8th row. GOOD
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<text align="left"><btn type="primary">[[math-11-nbf:sol:unit04:ex4-2-p6|< Questio