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

If the product of 6 integers is negative, at most how many of the integers can be negative? a. 2 b. 3 c. 4 d. 5 e. 6

Which revision best corrects the errors in the given sentence? When you were very small 8–10 pounds, you slept in this cradle. A. When you were very small (8–

Which characteristic is a property of molecular substances? (1) good heat conductivity(2) good electrical conductivity(3) low melting point(4) high melting poin

which component is affected when a catalyst is added to a chemical reaction

Two sets of 4 consecutive positive integers have exactly one integer in common. The sum of the integers in the set with greater numbers is how much greater than

how to find volume of a drawing of a piece of cake?

a car rent is $220 per week plus $0.25 per mile. Find the rental cost for a two week trip of 500 miles for a group of three people.

the Ten Commandments , the eighthfold path , and the five pillars of faith each serve to

Compared to a phosphorus atom, a P3– ion has (1) more electrons and a larger radius (2) more electrons and a smaller radius (3) fewer electrons and a larger rad

is 1.2 equal to 1.20?