11111111111

10101010101

10111111111

100000111111

None

-7

0

7

21

None

5

25

55

70

None

tan x

cosec x

sec x

- tan x

None

1n (x-2) - 1n ( x-1)

1n ( x -2) + 1n ( x -1)

1n ( x +2 ) - 1n (x +1)

1n (x + 2) + 1n ( x +1)

None

210

11664

2449440

5878560

None

$|a +b|\le \left|a\right| + \left|b\right|$

$|a -b|\le \left|a\right| +\left|b\right|$

$-\left|a\right|\le a\le \left|a\right|$

$\left|ab\right|\le \left|a\right| |-b|$

None

2

-2

$\sqrt{2}$

$-\sqrt{2}$

None

0

-2

2

$\infty$

None

4.4

3.0

0

-4.4

None