ayeitscharis
ayeitscharis
01-09-2016
Mathematics
contestada
Let f(x)=x^2 -81. Find f^1(x)
Respuesta :
caylus
caylus
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
VER TODAS LAS RESPUESTAS ( 81+ )
Otras preguntas
what is the answer to 2/4=/2
70 meter to engineering notation
A total of 6.825 inches of snow fell during a storm the snow fell at an average rate of 1.3 inches per hour for how many hours did the snow fall
-x+y(x-4)x X=-5 Y=-2
QUESTION 19 The round "Row Row Row Your Boat" is an example of homophonic texture. True False
The reservoir dropped 6 feet during a long dry spell and then rose 4, feet following that. Which expression shows one way to calculate the total change in reser
f the voltage V in an electric circuit is held constant, the current I is inversely proportional to the resistance R. If the current is 60 amperes when the re
A model car is 5 inches long. The actual length of the car is 15 feet . What is the scale factor of the model car?
An item costs $4 before taxand $4.32 after sales tax.What is the sales tax rate?
Miniver Cheevy, child of scorn, Grew lean while he assailed the seasons; He wept that he was ever born, And he had reasons. Miniver loved the days of old When s
