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rev | Admin | (Created page with "'''Solution: C''' The pdf of x is given by <math>f(x) = \frac{k}{(1+x)^4}, \, 0 < x < \infty </math>. To find <math>k</math>, note <math display = "block"> 1 = \int_0^{\inf...") | May 1'23 at 15:41 | +810 |