exam Maths Puzzle Numerical Ability

Hello, this is a tricky one.Find the domain of this function
f(x) = SR of 1/2x-1
(square root)

Where do I start? Thank you, Paul

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exam Other Question

I need 96 six inch squares, how many yards of fabric would that be? Find each cube root or positive sqare root

squae root of a second power b tenth power c sixth power