Question

Please give me the answer
Within 24 hrs or not needed​

Answer 1

f(x) is not onto function

$f(x) = 3 {x}^{3} - 3$

We cannot get "(-1)"

$f(x) = 3 {x}^{3} - 3$

$3 {x}^{3} - 3 = ( - 1)$

$3 {x}^{3} = - 1 + 3 = 2$

$3 {x}^{3} = 2$

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

$x = \sqrt[3]{ \frac{2}{3} }$

It is not possible because

$\sqrt[3]{ \frac{2}{3} } \notin \: z$

So, it is not onto function

(EXTRA INFORMATION)

Onto function :-

RANGE = CO-DOMAIN

$\mathbb{MATHEMATICS}$

$\textsf\blue{thanks}\textsf\red{dropper}$