$\frac{1}{2}$

2

3

$\frac{1}{3}$

$\frac{c}{2ab}$

$\frac{c^2}{2ab}$

$\frac{c^2}{\sqrt{2ab}}$

$\frac{c}{ab}$

2

6

8

14

$- m^2$

$m^2$

1

{0}

$\phi$

{$\phi$}

${\left(-1\right)}^{r}r x^r$

$\left(r + 1\right) x^{r+1}$

$\left(r + 1\right) x^r$

${\left(-1\right)}^r \left(r + 1\right) x^r$

28

36

42

44

$\pm \left(3 + 4 \mathrm{i} \right)$

$\pm \left(3 - 4 \mathrm{i} \right)$

$\pm \left(5 + 4 \mathrm{i} \right)$

$\pm \left(4 + 5 \mathrm{i} \right)$

${}^{n}C_2$

$\frac{{}^{n}C_2}{2!}$

${}^{n}C_2-2$

${}^{n}C_2-n$

y + n + 3 = 0

y - n - 3 = 0

y - n - 3 = 0

y + n + 3 = 0

$1:\sqrt{3}:\sqrt{2}$

$1:2\sqrt{2}:\sqrt{3}$

$1:\sqrt{3}:2$

$1:2\sqrt{2}:3$

$\frac{u^2 \sin \alpha }{g}$

$\frac{u \sin \alpha }{g}$

$\frac{2u \sin \alpha }{g}$

$\frac{u^2 {\sin }^2 \alpha }{g}$

$12 m mi{n}^{-1}$

$15 m mi{n}^{-1}$

$18 m mi{n}^{-1}$

$20 m mi{n}^{-1}$

সিস্টার্নি

ভেসিকল

ক্রিস্টি

ক্রোমোসোম

$\frac{\mathrm{\pi }}{2}-x$

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

x

2x

0

1

$\frac{\mathrm{\pi }}{6}$

$\frac{\mathrm{\pi }}{8}$

$e^{-x}$

$\frac{1}{e^x}$

$e^x$

$\frac{1}{e^{-x}}$

1

-1

2

$\frac{-\mathrm{\pi }}{2}$

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

$\frac{\mathrm{\pi }}{\sqrt{2}}$

$m{x}^{m-1}$

$\frac{x^{m+1}}{m+1}$

1

$\left(x^2+y^2,\frac{y}{x}\right)$

$\left(\sqrt{x^2 + y^2, {\tan }^{-1}\frac{y}{x}}\right)$

$\left(x^2 + y^2, {\tan }^{-1}\frac{x}{y}\right)$

$\left(\sqrt{x^2 + y^2, {\tan }^{-1}\frac{y}{x}}\right)$

-P

P

$p^2$

$p^3$

0

-1

e

1

-1

$\frac{1}{2}$

1

2

9/2

32/3

18/5

8