Question

найти производные функции:
x=7t+cos3t2

Answer 1

$x = 7t + cos 3t^{2}$

$x' = (7t)' + (cos 3t^{2})' = 7 +3 cdot 2t cdot (-sin 3t^{2}) = 7 - 6t sin 3t^{2}$