Ответ:
y'=(cos^2(5x))'=2cos5x*(cos5x)'=2cos5x*(-sin5x)*(5x)'=2cos5x*(-sin5x)*5=-10cos5x*sin5x=-5sin10x
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Ответ:
y'=(cos^2(5x))'=2cos5x*(cos5x)'=2cos5x*(-sin5x)*(5x)'=2cos5x*(-sin5x)*5=-10cos5x*sin5x=-5sin10x