$\left(\begin{array}{cc}2& 1\\ -\frac{3}{2}& -\frac{1}{2}\end{array}\right)$

$\left(\begin{array}{cc}-2& -1\\ \frac{3}{2}& -\frac{1}{2}\end{array}\right)$

$\left(\begin{array}{cc}-2& -1\\ -\frac{3}{2}& -\frac{1}{2}\end{array}\right)$

$\left(\begin{array}{cc}-2& 1\\ \frac{3}{2}& -\frac{1}{2}\end{array}\right)$

$x^2+y^2+8x +6y + 16=0$

$x^2+y^2 +8x +6y -16=0$

$x^2+y^2-8x -6y + 16=0$

${x}^2+y^2-8x -6y - 16=0$

$\pm 8$

8

-8

$\sqrt{8}$

3 e

2e

e

e -3

$\sqrt{6}$

$-\sqrt{6}$

6

-6

$-2\le p\le 2$

$-4<p\le 4$

$-2<p<2$

$-4\le p<4$

$\left[\begin{array}{cc}\frac{1}{8}& \frac{7}{8}\end{array}\right]$

$\left[\begin{array}{cc}\frac{1}{8},& \frac{1}{2}\end{array}\right]\cup \left[\begin{array}{cc}\frac{1}{2},& \frac{1}{7}\end{array}\right]$

$\left[\begin{array}{cc}\frac{1}{8},& \frac{1}{2}\end{array}\right]\cup \left[\begin{array}{cc}\frac{1}{2},& \frac{7}{8}\end{array}\right]$

$\left[\begin{array}{cc}\frac{1}{8},& \frac{1}{2}\end{array}\right]\cup \left[\begin{array}{cc}\frac{1}{2},& \frac{7}{8}\end{array}\right]$

2x +3y =12

3x +2y =12

2x + 3y =6

3x +2y =6

$(2,\infty )$

$(-\infty ,-2)\cup [2,\infty )$

$\{2,-2\}$

$[-2,2]$

$-\frac{\sin 2x}{\sqrt{\cos 2x}}$

$\frac{\cos 2x}{\sqrt{\sin 2x}}$

$\frac{2\sin x}{\sqrt{\tan x}}$

$\frac{\tan 2x}{\sqrt{\sin 2x}}$

180 ft

240 ft

216 ft

300 ft

16 th

12 th

18 th

15th

1

0

$-\frac{5}{4}$

$\frac{1}{2}$

$2n\mathrm{\pi } \pm \frac{\mathrm{\pi }}{2}$

$2\mathrm{n\pi }\pm \frac{\mathrm{\pi }}{3}$

$2\mathrm{n\pi } \pm \frac{{\displaystyle \mathrm{\pi }}}{{\displaystyle 4}}$

$2\mathrm{n\pi } \pm \frac{{\displaystyle \mathrm{\pi }}}{{\displaystyle 6}}$

$\left|\frac{c_1+c_2}{\sqrt{a^2+b^2}}\right|$

$\left|\frac{c_1-c_2}{\sqrt{a^2+b^2}}\right|$

$\left|\frac{c_1+c_2}{\sqrt{a^2-b^2}}\right|$

$\left|\frac{c_1-c_2}{\sqrt{a^2-b^2}}\right|$

$\frac{1}{\sqrt{3}}$

$\frac{\sqrt{3}}{2}$

$\sqrt{3}$

1

$\sqrt{x^2+4}$

$\frac{1}{1+\sqrt{x^2+4}}$

$\frac{1}{\sqrt{x^2+4}}$

$1+\sqrt{x^2}+4$

280

90

360

180

sin A

$-\frac{1}{2}(\sqrt{3} \cos A + \sin A)$

-cosA

$\frac{1}{2}(\cos A +\sqrt{2} \sin A)$

84 sq nuits

30 sq units

40 sq units

64 sq units