diketahui f(x) = 1-2x dan g (x) = x2 + 2x + 1 tentukanlah: a. f-1 (x) b. G-1 (x)

f(x) = y = 1 - 2x
2x = 1 - y
x = (1 - y)/2

f^-1 (x) = (1 - x)/2

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g(x) = y = x² + 2x + 1
y = (x + 1)²
x + 1 = ± √y
x = -1 ± √y

g^-1 (x) = -1 ± √x