v(t) = x'(t) = 50·cos(t+ π/3)
v(0) = 50·cos(0 + π/3) = 50·cos(π/3) = 50·1/2 = 25.
Ответ. 25.
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v(t) = x'(t) = 50·cos(t+ π/3)
v(0) = 50·cos(0 + π/3) = 50·cos(π/3) = 50·1/2 = 25.
Ответ. 25.