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A. f(x) = ½x - ¾
y = ½x - ¾
4y = 2x - 3
2x = 4y +3
x = 4y+3 / 2
f-¹(x) = 4x+3 / 2
2.
(gohof)-¹(x)
h-1(x) = -2x+11
y = -2x+11
2x= -y+11
x = -y+11 / 2
h(x) = -x + 11 / 2
(goh)of)(x)
2(-x + 11 /12 ) of(x)
(-x + 11 / 6) of(x)
-f(x) + 11 / 6
-(4x+7) +11 / 6
-4x-7+11 / 6
-4x+4 / 6
jadi
(gohof) (x)
inverskan ditanya inversnya
y = -4x+4 / 6
6y = -4x+4
4x= -6y +4
x = -6y + 4 / 4
(gohof)-¹(x) = -6x + 4 / 4
atau -3/2x + 1