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

A result of Japan's attack on Pearl Harbor was a. The US formed a pact with Indichina b. the US formed a pact with Germany against Japan c. thousands of Amer

When oxygen bonds to itself to form breathable oxygen gas what kind of bond is involved? a. ionic b. covalent c. oxygenated d. non-metallic

Foreign object obstruction to the airway in the adult usually occurs

Which issue that arose under Hoover helped Roosevelt into the White House in 1932?

sailfish are the fastest fish in the world they can swim 68 miles hour estimate how far sailfish can swim in 3 hours

Which type of rock is formed from the cooling and hardening of molten material? a. igneous b. sedimentary c. metamorphic

An advantage for oneself, a benefit or gain is called a?

Carbohydrates are the main building block of tissues and organs. a. True b. False

N the 1920s, manufacturers encouraged consumerism by offering

referring to the body and it's functions