ayeitscharis
ayeitscharis
01-09-2016
Mathematics
contestada
Let f(x)=x^2 -81. Find f^1(x)
Respuesta :
caylus
caylus
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
VER TODAS LAS RESPUESTAS ( 77+ )
Otras preguntas
Multistep Alex needs to varnish the top and the bottom of a dozen rectangular wooden planks. The planks are 8 feet long and 3 feet wide. Each pint of varnish co
How does acceleration affect velocity
a 32 ounce bottle of water costs $1.92 what is the cost per ounce
The book of Mark is probably the first Gospel to be written. a. True b. False
Organisms that get their energy by eating other organisms are called _______. A. producers. B. consumers. C. predators. D. prey.
War Communism in Russia involved all of the following, except a. the takeover of banks, factories, mines and railroads. c. forcing peasants to join the military
In what city did the Continental Congress meet? a. Boston b. Philadelphia c. New York City d. Washington d. C.
The Universal Declaration of Human Rights was created by a. the United States. c. Japan. b. Europe. d. the United Nations.
(please help me out D: ) (I screenshot the question and answer)
The two bases of a trapezoid are 3 and 11 and the altitude is 8. What is the area of the trapezoid? A. 56 B. 112 C. 64 D. 96
