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 ( 19+ )
Otras preguntas
What does imagery mean
There is a turtle race. The race will last 2 minutes. I have to find the distance from the start each turtle will be at the end of the race. Speed (in inches pe
What is 38/50 as a decimal... and what is 28/50 as a decimal? PLEASE HELP ME !!!! i hate struggling with homework!
the perimeter of a square is 4 times as great as the length of any of its sides. Determine whether the perimeter of the square is proportional to the side lengt
List the perfect squares between 100 and 500 that are even numbers.
Type of picture Paul Revere made of the Boston massacre?
sophia has 3 pink tulips and 3 white tulips. what fraction of sophias tulips are pink
The decline in medieval trade was caused by
which is more acidic pH2, pH4 or pH6?
the length of a rectangle is 3 feet less than twice the width of the rectangle. if the perimeter of the rectangle is 324 feet, find the width and the length?
