Question

Fungsi invers dari
1). (x + 2) / 3
2). x^2 - 1

Answer 1

F(X)= (x+2) /3
3 f(x) = x+ 2
x =  3. f(x) - 2
f⁻¹ (x)= 3x - 2

f(x)= x² -1
x² = f(x) + 1
x  =√{f(x) + 1}
f⁻¹(x)= √(x + 1)