B bluesky44 Jan 2020 1 0 Serbia Jan 12, 2020 #1 Is the following allowed: \(\displaystyle (x-1)^\frac{1}{2}(x+1)^\frac{1}{2}=\sqrt{x^2-1}\)

P Plato MHF Helper Aug 2006 22,493 8,654 Jan 12, 2020 #2 bluesky44 said: Is the following allowed: \(\displaystyle (x-1)^\frac{1}{2}(x+1)^\frac{1}{2}=\sqrt{x^2-1}\) Click to expand... The short answer is yes, provided one takes special care with domain issues. It is certainly value for \(\displaystyle x\ge 1\). Reactions: topsquark and bluesky44

bluesky44 said: Is the following allowed: \(\displaystyle (x-1)^\frac{1}{2}(x+1)^\frac{1}{2}=\sqrt{x^2-1}\) Click to expand... The short answer is yes, provided one takes special care with domain issues. It is certainly value for \(\displaystyle x\ge 1\).