$\left\{4\right\}$

$\left\{3\right\}$

$\left\{6\right\}$

$\{4,6\}$

$\left\{5\right\}$

$1-3\sqrt{2}$

$\pm (1-3\sqrt{2})$

$1-3\sqrt{-2}$

$\pm (1-3\sqrt{-1)}$

$\pm (1+3\sqrt[]{-1)}$

$x=y=z=0$

$x=0, y=-b,z=c$

$x=y=z=\frac{a}{2}$

$x=a, y=-a, z=0$

$x=1, y=1, z=-\frac{1^{}}{c}$

$\frac{1}{\sqrt{2}9}(2\overline{i}+3\overline{j}+4\overline{k)}$

$\frac{4}{\sqrt{29}}(2\overline{i}+3\overline{j}+4\overline{k)}$

$\frac{4}{\sqrt{29}}(4\overline{i}+3\overline{j}+2\overline{k)}$

$\frac{4}{\sqrt{29}}(-4\overline{i}+3\overline{j}+2\overline{k)}$

$\frac{4}{\sqrt{29}}(-4\overline{i}+3\overline{j}-2\overline{k)}$

1

$\frac{1}{3}$

$\frac{1}{2}$

$\frac{1}{6}$

$(120.87 and 83.12)kg$

$(125.87 and 80.10)kg$

$(115.87 and 85.15) kg$

$(120 and 85)kg$

$(125 and 90)kg$

$2.25sq cm$

$3 sq cm$

$4 sq cm$

$4.5sq cm$

$6 sq cm$

A

B

$A \cup B$

$A\cap B$

$None$

$\left[\begin{array}{c}2\\ .5\end{array}\right]$

$\left[\begin{array}{cc}16& -2\\ .5& 3\end{array}\right]$

$\left[\begin{array}{c}.5\\ -2\end{array}\right]$

$\left[\begin{array}{cc}-16& 2\\ 3& .5\end{array}\right]$

None

[-3,3], [0,3],

[0,3], [3,-3],

[3,-3], [0,-3],

[-3,0], [3,0],

None

$30°$

$75°$

$105°$

$135°$

$150°$

$2\cos \frac{\theta }{2^{n-1}}$

$2\cos \frac{\theta }{2^n}$

$2\cos \frac{\theta }{2^{n+1}}$

$2\cos \frac{\theta }{2}$

$2\cos \frac{\theta }{2}$

1

2

$>2$

None

h

2h

$\frac{h}{2}$

$\frac{h}{\sqrt{2}}$

None

$a^{a^x}$

$\frac{a^x }{\log a}$

$\frac{a^{a^x}}{3}$

$\frac{a^{a^{z\left[x\right]}}}{(\log a{)}^3}$

1

12

16

18

20

None

$\infty$

e

0.5

None

$\sum _{k=0}^{\infty }\frac{(-1{)}^{k } x^{2k}}{2^{2k}(k!{)}^2}$

$\sum _{k=0}^{\infty }\frac{(-1{)}^{k } }{(2k+1)k!}$

$\sum _{k=0}^{\infty }\frac{(-1{)}^{k } \ln x }{\sqrt{k} k!}$

$\sum _{k=0}^{\infty }\frac{(-1{)}^{k +1} x{ }^k}{ k!}$

$\sum _{k=0}^{\infty }\frac{(-1{)}^{k } x{ }^{-{\displaystyle \frac{1}{2}}}}{ 2\ln k}$

$\pi a^2$

$\pi ab$

$\frac{\pi }{4}abs$

$ab$

None

$\overline{A}\times (\overline{B} \times \stackrel{\rightharpoonup }{C)}$

$\overline{A}.(\overline{B} \times \stackrel{\rightharpoonup }{C)}$

$\overline{A}.(\overline{B} \stackrel{\rightharpoonup }{C)}$

$\overline{A}+(\overline{B}\times \stackrel{\rightharpoonup }{C)}$

$\overline{A}. \overline{B}+\overline{B}. \stackrel{\rightharpoonup }{C}$

$(a-p,a) \cup (a,a+p)$

$a-p\le x\le a$

$a\le x\le a+p$

$a-p\le x\le a+p$

$(a, p-a)\cup (a+p, a)$

$0<\theta <90°$

$90°<\theta <180°$

$180°<\theta <270°$

$270°<\theta <260°$

$-90°<\theta <0°$

$\frac{1}{2}{\log }_{e}2+\frac{\mathrm{\pi }}{4}i$

$2{\log }_{e}2+\frac{\mathrm{\pi }}{4}i$

$\frac{1}{2}{\log }_{e}2-\frac{\mathrm{\pi }}{4}i$

$\frac{1}{2}{\log }_{e}2+(2n+\frac{1}{2}) \mathrm{\pi i} \mathrm{where} \mathrm{n} \mathrm{is} \mathrm{an} \mathrm{interger}$

$\frac{{\displaystyle 1}}{{\displaystyle 2}}{\log }_{\mathrm{e}}2+(\mathrm{n}+\frac{{\displaystyle 1}}{{\displaystyle 4}}) \mathrm{\pi i} \mathrm{where} \mathrm{n} \mathrm{is} \mathrm{an} \mathrm{interger}$

$(1-a^4) -b^2(4-b^2)$

$2a(1+a^2+b^2)$

$-2a(1+a^2+b^2)$

$(1+a^2+b^2)$

$-2a(1+a^2+b^2{)}^3$

$P>Q$

$P=Q$

$P<O$

$P=Q \tan a$

$Q= P \tan a$

$y=\frac{1}{3}x$

$y=3x$

$y=-3x+4$

$x=3y+7$

None

50

100

150

200

250

$\sqrt{u^{2+}{v}^2-2uv\cos ({\sin }^{-1}\frac{u}{v}})$

$\sqrt{u^{2+}{v}^2+2uv\cos ({\sin }^{-1}\frac{u}{v}})$

$\sqrt{u^{2+}{v}^2-2uv\cos ({\tan }^{-1}\frac{u}{v}})$

$\sqrt{u^{2+}{v}^2+2uv\sin ({\sin }^{-1}\frac{u}{v}})$

$\sqrt{u^{2+}{v}^2-2uv\sin ({\sin }^{-1}\frac{u}{v}})$