ayeitscharis ayeitscharis

01-09-2016
Mathematics

contestada

Let f(x)=x^2 -81. Find f^1(x)

Respuesta :

01-09-2016

Hello,

I suppose you mean -1! else f(x)=f^1(x)

y=x²-81
-> x=y²-81 (exchahge x and y)
->y²=x+81 (solve for y)
[tex]y= \sqrt{x+81} \ or \ y=- \sqrt{x+81} [/tex] It is because (f^-1)(x) is not a function!

with x>=-81

Answer Link

Otras preguntas

What is the meaning of the prefix un-? A. over B. above C. under D. not

Sam drove 320 miles in 2.5 hours, how long will it take to drive 500 at the same rate (speed)?

How many 3/4s go into 9/2

what is the value of 43rds the 3 is meant to be small

4. After the website is published, who has the responsibility updating dead links and removing unused pages?

A mail courier charges a base fee of $2.95 plus $10.10 per package being delivered. If x represents the number of packages delivered, which of the following equ

answer this for me plz 5f(x)=x^3-1

How many formula units of CaCO3 are present in 4.72 n of calcium carbonate?

HI is it posible to give me som anser for matematic

In two or more complete sentences, describe the transformation(s) that take place on the parent function, f(x) = log(x), to achieve the graph of g(x) = log(-3x+