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

Gloria is Latin for what? Love God bright and wonderful glory

What is the purpose of this story?

Which of the following is a bullet type in the <ul> tag? (a) Disc (b) Circle (c) Square (d) All of these

Find the vertex of G(x)=x^2+4 x

13) The school that Natalie goes to is selling tickets to a play. On the first day of ticket sales the school sold 13 adult tickets (x) and 11 student tickets (

What friendly valentine’s day alternative is celebrated on february 13?

in ip address 202.54.15.178, 15.178 is ______ address. a)Node b) Network c) Domain. d)Internet

A bowling ball shaped like a sphere has a diameter of 21.6 centimeters. Which measurement is closest to the volume of the bowling ball in cubic centimeters?

Which possible discovery would be attributed to an inorganic molecule?

Write 18 cm as a percentage of 450 cm