Word Count : 244

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We are given the functions: \[ f(t) = 4t, \quad t \in \mathbb{R} \] \[ g(x, y) = x + y, \quad x, y \in \mathbb{R} \] We need to determine whether \( f \circ g \) (fog) and \( g \circ f \) (gof) exist. ### Step ______ ____ _____ __________ ______ _________ ________ ___.
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