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QA: Using by-hand formulas first (and Desmos only to verify later), (i) Find the x values...

QA: Using by-hand formulas first (and Desmos only to verify later),

(i) Find the x values of the inflection points of exp(-x^2/2), which is related to the usual “bell curve” in statistics.

(ii) Find the x values of the inflection points of 1/(1+x^2), which is related to a heavy-tailed version of a “bell curve”. Hint: try plus/minus 1/sqrt(3) as a guess, then show that f’’ is zero there.

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