Question

Se f: R - R tal que f(x)=2x, o valor de f-1(3) e:

a) 2/3
b) 1/3
c)1/2
d)6
e)3/2

Answer 1

y= 2x

x = y/2

f-¹(x) = x/2

f-¹(3) = 3/2 ✓