Question: programming language concepts helppppp please PS1. (10 points) Compute the weakest precondition for the following assignment statements and their postcondition. 5 HOW all steps to

programming language concepts

helppppp please

PS1. (10 points) Compute the weakest precondition for the following assignment statements and their postcondition. 5 HOW all steps to derive these ( 5 points off it not showing): b=5(1a);a=15b3(b>8) PS2. (10 points) Assume the following JavaScript program: What are the values of x in Sub1 (1) and y in Sub3() displayed when those functions are executed from main under dynamicscoping rules? PS3. (10 points) Perform the pairwise disjointness test on the grammar C, and SHOW your steps ( 5 points off if not showing), check pass, or fail. CacAAccBBa PASS or FAlL

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