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 family drives 4 1 2 miles in 1 10 of an hour. What is their rate of speed in miles per hour?

After the main meeting, the meeting planner would like attendees to attend smaller break out sessions designed to provide more detail instructions about the com

What is the sum of 2/ 10 +6/100

An event sold $608 worth of tickets. Adult tickets cost $11 and children's tickets cost $6. If 68 tickets were sold, how many were adult tickets and how many we

Consuming alcohol inhibits the release of ADH. As a result __________. a.urine volume will increase. b.there will be more aquaporins in the membrane of cells fr

Which factors influence how drinking and bi ge drinking affect a person?

Kinetic energy problemset

What is the Thin layer around the earth in witch all living organisms exist

One of the solutions to the equation 5x^2+bx+12=0 is − 4/5 . Find the other solution.

please solve with working much appreciated