3- , thei a) E{f,(y\x)} =- exp(- o/27(2-r²) 20ʻ(2-r²)' 1 b) E{f, (x)f;(y)}=- 2.noV4-r

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Q: s the function y = 3(x-4)^2 + 1 symmetrical with respect to the y-axis ? Why ?

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