Answer
$y'=(e^{4x})(1+4x)$
Work Step by Step
$y=xe^{4x}$
$u=x$
$u’=1$
$v=e^{4x}$
$v’=4e^{4x}$
$y’=(1)(e^{$x})+(x)(4e^{4x})$
$=(e^{4x})(1+4x)$
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