Question

If A={x/x? = x,xe R}, then A is equal to (a) {1] (b) {0,1} (c) {-1} (d) {-1, 1)​

Answer 1

Step-by-step explanation:

x = x³

ir, x³ – x = x(x² – 1) = 0

or, x = 0, ±1

=> A = { – 1, 1}