$2x^2+4x-3=0,\ a=2,\ b=4,\ c=-3$

$x^2+3x+4=0,\ a=1,\ b=3,\ c=4$

$x^2+4x+3=0,\ a=1,\ b=4,\ c=3$

$x^2+4x-3=0,\ a=1,\ b=4,\ c=-3$

4

2

12

6

Mode = 2, Median = 2, Mean = 2

Mode = 3, Median = 3, Mean = 3

Mode = 3, Median = 2, Mean = 1

Mode = 2, Median = 3, Mean = 3

 $4x^4$  

 $\frac{x^6}{6}$  

 $5x^4$  

 $\frac{x^5}{5}$  

 $\frac{x^6}{6}$  

 $5x^5$  

 $\frac{x^6}{6}+c$  

 $5x^5+c$  

 $a^2,\ ab,\ 3^2,\ 36$  

 $2a,\ ab,\ 6,\ 15$  

 $a,\ ab,\ 3,\ 36$  

 $a,\ \sqrt{ab},\ 3,\ 6$  

8

10

13

15

$\left(a\right)\ \frac{3}{18}\ \ \ \ \ \ \ \ \ \ \ \ \left(b\right)\ \frac{7}{18}$

$\left(a\right)\ \frac{1}{3}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \left(b\right)\ 0$

$\left(a\right)\ \frac{6}{13}\ \ \ \ \ \ \ \ \ \ \ \ \left(b\right)0$

$\left(a\right)\ \frac{1}{6}\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \left(b\right)\ \frac{1}{3}$

 $\operatorname{cosec}\theta=\frac{1}{\sin\theta},\ \ \sec\theta=\frac{1}{\tan\theta},\ \ \cot\theta=\frac{1}{\cos\theta}$  

 $\operatorname{cosec}\theta=\frac{1}{\cos\theta},\sec\theta=\frac{1}{\sin\theta},\ \cot\theta=\frac{1}{\tan\theta}$  

 $\operatorname{cosec}\theta=\frac{1}{\sin\theta},\ \sec\theta=\frac{1}{\cos\theta},\ \cot\theta=\frac{1}{\tan\theta}$  

 $\operatorname{cosec}\theta=\frac{1}{\tan\theta},\ \sec\theta=\frac{1}{\sin\theta},\ \cot\theta=\frac{1}{\cos\theta}$