How much you know about Roots?

Algebra Level 3

Which of the following function doesn't have any $root$ ?

A) $log(x)$
B) $e^x$
C) $[ x ]$
D) $| x |$
E) $Sgn(x)$
F) $\{x\}$

$\boxed{DETAILS}$
$\Rightarrow$ $[ . ]$ represents floor function .
$\Rightarrow$ $\{ . \}$ represents fractional Part .

$\small{Original}$

B A None of these C More than one option correct F D E

1 solution

Gian Sanjaya
Sep 1, 2015

$\log(1)=[0]=|0|=sgn(0)=$ {0} $=0$ . That's it.