tolong ini penting untuk besok di kump

jawab

2)

f(x)= 2x - 3
g(x) = x² + 2x- 3

gof(2) = g { f(2)}
= g (2(2) -3))
= g (4-3)
= g(1)
= 1² + 2(1) - 3
= 1 +2 - 3
= 0


3)

f(x)= (x + 1) /(2x - 34)

f⁻¹ { (x+1)/(2x - 34)} = x

f⁻¹ (2)= ...

(x + 1)/(2x - 4) = 2
2(2x - 4) = x+ 1
4x - 8 = x + 1
4x - x = 1 + 8
3x = 9
x = 3

f⁻¹ (2)= 3