$\frac{1}{e}$

e

1

1

2

$\frac{\mathrm{\pi }}{4}$

1

x

1/x

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

$x^2-1=0$

$x^2+1=0$

$x^2+x+1=0$

$x^2-x=1=0$

1

-1

∞

1

-1

∞

(0, 0)

(1, 1)

(-1, 1)

(1,-1)

$\frac{b}{c}$

$\frac{-b}{c}$

$\frac{-c}{b}$

$\frac{c}{b}$

x≥3

x≤ x

x<

কোনটিই নয়

-1

-f(x)

f(x)

1/2

-2

2

-1/2

$\frac{-2}{x^3}$

$\frac{2}{x^3}$

$\frac{-1}{x^2}$

$\frac{1}{x^2}$

$\mathrm{\pi }$

4$\mathrm{\pi }$

8$\mathrm{\pi }$

16$\mathrm{\pi }$

4

$\frac{-1}{4}$

$\frac{1}{4}$

-4

4n$\mathrm{\pi }$

(2n+1)$\mathrm{\pi }$

2n$\mathrm{\pi }$

n$\mathrm{\pi }$