Mathematics
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どう計算したら矢印の様になりますか?

(10) y'=2sin 2x. (sin 2x)' = 2sin 2x-2cos2x 2xg = 2sin 4x xial nia

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✨ Best Answer ✨

sin2θ=2sinθcosθ(←これは加法定理から求められるからやってみると良いかも!)

2sin2x・2cos2x
=2・2sin2x cos2x
=2sin4x

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