x cannot be 1 since the denominator of the exponent would be 0. Take logs of both sides: Use a rule of logs to write the exponent as a coefficient of a log: Substitute for k in This will be true for every allowable value of x Thus the equation has a solution for every positive value of x except 1 That is, for all x ∈ {x|0 < x < 1 or x > 1} (0,1) U (1, ∞) Edwin