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f^1(x) = V(x-4) + 1
a) f^-1(5) = V(5-4) + 1
= V(1) + 1
= 1+1
= 2
b) f^-1(13) = V(13-4) + 1
= V9 + 1
= 3 + 1
= 4
c) f^-1(x) = 2
V(x-4) + 1 = 2
V(x-4) = 1
V (x-4) = V1
x = 5
d) f^-1(x) = 1
V(x-4) + 1 = 1
V(x-4) = 0
x = 4
f^-1(x^2- 2x+5) = x
a)
f^-1(5) = ..
x^2 - 2x + 5= 5
x(x-2)= 0
x = 0 atau x = 2
f^-1(5) = 0 atau f^-1(5) = 2
.
b)
x^2 -2x + 5 = 13
x^2 - 2x - 8 = 0
(x-4)(x+2) = 0
x= 4 atau x = -2
f^-1(13) = 4 atau f^-1(13) = -2
.
c)
f^-1(x) = 2
f(2)= x
x = 2^2 - 2(2) + 5
x = 5
.
d)
f^-1(x) = 1
x = (1^2 - 2(1) + 5 =
x = 1 -2 + 5
x = 4