# optimus

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 May3 accepted The maths required for an economics degree May3 comment The maths required for an economics degree@Amzoti Thanks for your advice. Probably my fear in maths since I failed once in my undergraduate days. May2 comment The maths required for an economics degree@Amzoti I am pretty weak in maths. I dont know if I should take econs May1 comment The maths required for an economics degreeThe amount of maths in econs seems terrifying. I have never taken calculus before as well. gregmankiw.blogspot.sg/2006/06/love-econ-bad-at-math.html May1 asked The maths required for an economics degree May1 accepted General solution to homogeneous difference equation Sep21 awarded Custodian Sep14 awarded Yearling Apr29 accepted Equivalence Relation Apr29 accepted Why add 0.5 to a z-score? Apr29 accepted boolean algebra simplification Apr29 accepted Euclidean algorithm to find the GCD May6 comment Why add 0.5 to a z-score?well, can you further elaborate? May6 comment Why add 0.5 to a z-score?and why is Pr(0 <= z <= 1.5) = 0.4332 without adding 0.5? May6 comment Why add 0.5 to a z-score?example Pr(z <= 1.35) = 0.5 + Pr(0 <= Z <= 1.35) = 0.5 + 0.4115 May6 asked Why add 0.5 to a z-score? May6 comment boolean algebra simplification@its-ok-in-theory hi, why it is $\lnot Q \land Q$ will give $\lnot Q$ back ? May6 comment boolean algebra simplificationwhy $(\lnot(P \land Q)) \lor (Q \land R)$ becomes $(\lnot(P \land Q)) \lor R$ May6 revised boolean algebra simplificationadded 6 characters in body May6 comment boolean algebra simplificationfor the second one $(x')' = x$ therefore $(P \lor Q)$