Mathematics, 16.10.2021 19:40 deena7
Cho phương trình dao động x = 4×cos(4×π×t + π÷2)∧cm
a)cho biết biên độ pha ban đầu tần số góc
b)tình tần số, chu kỳ
c)tính li độ tại t=0.25 (s)
Answers: 2
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Cho phương trình dao động x = 4×cos(4×π×t + π÷2)∧cm
a)cho biết biên độ pha ban đầu tần số góc
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