Question

i need help with a math problem please :>

Answer 1

To find \(\normalsize\color{royalblue}{ \rm f^{-1}(x) }\).

\(\normalsize\color{royalblue}{ \rm y=7x^2-3 }\)

steps:
~ put \(\normalsize\color{royalblue}{ \rm x }\) where \(\normalsize\color{royalblue}{ \rm y }\) is, and \(\normalsize\color{royalblue}{ \rm y }\) where \(\normalsize\color{royalblue}{ \rm x }\) is. (replace them with each other)
~ add \(\normalsize\color{royalblue}{ \rm 3 }\) to both sides.
~ divide both sides by \(\normalsize\color{royalblue}{ \rm 7 }\).
~ take the square root both sides.

Answer 2

( \(\normalsize\color{royalblue}{ \rm f^{-1}(x) }\) is just a notation for an \(\normalsize\color{royalblue}{ \rm inverse~function }\). )

Answer 3

so its C

Answer 4

it is not... I would prefer that you show your work here.

Answer 5

its A i got it right :D

Answer 6

idk:(

Answer 7

yes, A is correct.

Answer 8

and that function is not a function. Or at least it is not an explicit, rather, it is an implicit function.

Answer 9

it is a function, like a function... just that it is not a function according to the elementary understanding of this word. (i.e. that no x-value should repeat twice)

Answer 10

ok thanks :)