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

Which of the following best describes the significance of The Divine Comedy? A. The dialogue resembled the writing of classical Greek dramatists, but the author

The domino effect, in reference to U.S. policy in Indochina during the Cold War, refers to which of these? A. the strategy of the U.S. military to defeat commun

When using an editing checklist to review your paper, you should

If the earth´s tides increased , what would be the most likely explanation?

Q)How is a conductor different from an insulator. A)A Conductor contains free electrons. B)A conductor contains free protons. C)A conductor contains an equal nu

In 1987, Reagan and Gorbachev signed the Intermediate-Range Nuclear Forces (INF) Treaty. What did the INF Treaty do? improved US-Soviet relations through reduct

under the region of Louis xIV, the government in France was

Which statement best explains how classical civilizations developed out of the first agricultural societies? A. The need to defend surplus food supplies and per

In the 1980s, Bush proposed legislation to save the banking industry at a cost of millions of dollars. billions of dollars. thousands of dollars. trillions of d

Which answer best expresses some of the issues related to economics that are listed in the Declaration of Independence? Cutting off trade and imposing taxes on