[Toán 11] Vi phân

N

niemkieuloveahbu

Ta có:

[TEX]dy=y' \Delta x=2sin2xcos2x \Delta x=sin4x \Delta x\\ Voi x=\frac{\pi}{3}, ta\ co: \Delta x=0,01 \Rightarrow dy=sin{\frac{4\pi}{3}}.0,01=-0,01[/TEX]
 
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