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pdf of X is: ƒχ(x) = e⁻x, x>0, 0, otherwise Y = (X - 1)² find...

pdf of X is: ƒχ(x) = e⁻x, x>0, 0, otherwise
Y = (X - 1)²
find pdf of Y

Math   Statistics-And-Probability   
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In this question we need to derive the pdf of Y from X , so we will put X in terms of Y and then proceed further as explained in the images below

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