Question

dada: f: IR* => IR*, tal que f(x)= 9x -1 / 4, calcule x de modo que f(x)=5.

Answer 1

f(x) = 9x - 1/4

5 = 9x - 1/4
20 = 9x - 1
20 + 1 = 9x
21/9 = x
x = 7/3