For any r € R. r > 0, define A, = { €R] =r< x < } = (-r, 7). Compute the following unions and intersections. Use interval notation, for example [0,1), (-inf,3], }) (for empty set), etc. 1. If I = {r € R | r ≥ 1} then (a) Urci Ar= (b) nrc Ar= 2. If I = {r € R|r> 0} then (a) Urci Ar= (b) Orel Ar=

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