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

List four factors you should consider when selecting a financial institution.

Solve the following equation by identifying all of its roots including all real and complex numbers. In your final answer, include the necessary steps and calcu

explain the adaptive value of a larger body size at high altitudes.

Angela shared a cab with her friends. When they arrived at their destination, they evenly divided the $48 fare among the j of them. Angela also paid a $5 tip. H

True or false: the state of florida can suspend your license if you make a fraudulent driver license application.

Shape 1 and shape 2 are plotted on a coordinate plane. Which statement about the shapes is true? Shape 1 is congruent to shape 2, which can be shown using a s

Which equation represents the total energy of a system

Please someone help me

How do you balance. __PCl3-->__P4+__Cl2

On number 1 please.