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Me00007
@Me00007
July 2022
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sin2x cos2x=[tex] \frac{1}{2} [/tex]sin4x
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Defenet
Тут так же как и во втором, сначала приведем к общем знаменателю, а потом воспользуемся формулой:
sin(2a) = 2sina*cosa
После преобразования получится:
(2sin2x*cos2x)/2 = 1/2sin4х
(sin4х)/2 = (sin4x)/2
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Me00007
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Answers & Comments
sin(2a) = 2sina*cosa
После преобразования получится:
(2sin2x*cos2x)/2 = 1/2sin4х
(sin4х)/2 = (sin4x)/2