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 organ system does the thyroid belong to?

1. When the American Revolution began, it looked like the colonies faced insurmountable odds. How did a ragtag band of volunteers without a proper source of fun

Find the angle θ (if it exists) in the interval [0°, 90°) for which sin θ = cos θ.

The sum of two numbers is 9. If one number is subtracted from the other, the result is 5. Find the numbers.

When you and your friend have different standards, you might have a conflict over what difference between you?

Consider the chemical formula for calcium chlorate: Ca(ClO3)2 How many of each of these atoms are in a molecule of calcium chlorate? Ca: Cl: O:

Suppose that a = {2, 4, 6}, b = {2, 6}, c = {4, 6}, and d = {4, 6, 8}. identify the pairs of sets in which one is a subset of the other (in any order).

The purpose of the petition sent to King George III by the First Continental Congress was to

_________ has NOT been used as an approach to defining abnormal behavior. Statistical infrequency Personal distress Medical school consensus Violation of norms

On mange la galette des rois Voilà un morceau pour toi. Cherche la fève Si tu l'as, tu es le roi. La galette des rois On peut la couper en dix Ou la couper e