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sdas [7]
4 years ago
11

DESPERATE HELP NEEDED!!! MATHS!!! WILL AWARD BRAINLIEST!!!

Mathematics
1 answer:
lapo4ka [179]4 years ago
6 0

Answer:

a) 24

b) f^-1 = \sqrt{x+1}

c) 3

Step-by-step explanation:

Just plug the numbers in for x:

(5)^2 -1 = 24

Switch x and y then solve for y and replace y with f^-1(x):

x = y^2 -1

sqrt(x +1) = y = f^-1(x)

Now plug in 8:

f^-1(x) = sqrt(8 +1)  = 3

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