andre21210 andre21210
  • 04-08-2015
  • Mathematics
contestada

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

Respuesta :

JaySL JaySL
  • 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

45 points! Please show work! Two point charges of +30.0 μC and -9.00 μC are 20.0 cm apart, with the negative charge to the right of the positive charge. Taking
Why do most people in Korea live along the western coastal plains?
What is the answer to 13b-2b
Which food falls under the granos food group? el arroz la carne la leche el queso
Which decision did the allies make about the future of Germany at the yalta conference
Effects of chronic __________ use include emphysema, heart disease, stroke, impotence, infertility, stress, and cancer of numerous organs
a meter is closest to a. 3 yards b. 3 ft c. 10 cm d. 1/2 mile e. 20 in f. 1,000 cm
what does a notational analyst do?
Many newspapers are making the transition from print to the web. How do you think this will change the way that people receive the news? What do you think the
r(x)=(500+ax)(50-bx)