Recent content by IDontKnow430

x e R a.) x>=0 b.)x>1 c.) 0<=x<4. I had wrongly formated question before, lost few ^symbols while posting, should be fixed now.

Homework Statement a.)y=sqrt(2^x -1) . I tried: b.)y=log(sqrt(2^x -2)) and c.)y=log^3 (2-sqrt(x)). Homework EquationsThe Attempt at a Solution x=sqrt(2^y -1) x^2 = 2^y -1 2^y = x^2 +1 y=log2(x^2 +1) y=2 log2(x+1) is that correct result? regarding b and c I am just lost :/. Will appreciate...