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

An orbital is defined as a region of the most probable location of (1) an electron (3) a nucleus(2) a neutron (4) a proton

Which condition causes ocean salinity to increase? A. river water flowing out into the ocean B. high levels of precipitation C. high levels of evaporation

an adjective can describe both a

Which point names the ordered pair (–7, 6)? A. Point B B. Point C The attachment below is the question and the graph. C. Point D D. Point A

PLZ HELP ME and tell me how to get to my answer. What is the mean absolute deviation for the data? 30, 35, 35, 40, 55 A. 5 B. 6.4 C. 6.8 D. 25

A matchbox is 5cm by 8cm by 2cm. A carton is 20 cm by 40 cm by 20 cm The carton is completely filled with matchboxes. Work out the number of matchboxes in the

As the pressure on the surface of a liquid decreases, the temperature at which the liquid will boil (1) decreases (2) increases (3) remains the same

Which sentence does not contain any errors? A. How many is are in the word insisting? B. Our police station's phone number has seven 6's in a row. C. Be sure to

Evaluate the function at the given value of the independent variable and simplify. f(x) = 4x2 + 5x - 6; f(x - 1)

Supporters of the atomic bomb argued against the idea that the US should not use the bomb against Japan by.... A) suggesting the destruction would not be any gr