andre21210 andre21210

04-08-2015
Mathematics

contestada

Let f(x) = x2 - 81. Find f-1(x).

Respuesta :

04-08-2015

This is equivalent to finding a function g in which [tex]g(x^2-81)=x[/tex].

We simply reverse the actions of the initial function by adding 81 back and taking the square root. Therefore, [tex]f^{-1}(x)=\sqrt{x+81}[/tex].

Answer Link

Otras preguntas

I need help finding this sigma-notation sum. I'm not quite sure what to do with the exponent, I have determined a1 = 12, a2=36, a3=108, and a4=324. I notice the

Please help I have no clue

A topic for a research paper can be _____ than the topic for a short essay. A. narrower B. broader

Jalil and Victoria are each asked to solve the equation ax – c = bx + d for x. Jalil says it is not possible to isolate x because each x has a different unknown

Which philosopher concluded that government could be best kept under control if it were divided into three separate branches of government?(10.2.1) rousseau loc

Which of the following is not true about the characters in the frame story and the story within a story? A.) Vortigern, the villain in the story within a sto

When Jasmine went to bed, the outside temperature was 19°F. When she woke up the next morning, the temperature had decreased to -23°F. By how many degrees did t

According to locke, when do people have the right to overthrow a government?

if a material contains three elements but not joined in a fixed proportion it is a

Certain antibacterial soap kill 99% of the bacteria present on heand. Constant use of these soaps could be harmful over time because