求导~(1)y=1/x(2+5x)^10 (2)y=xsin(2x+π/2)cos(2x+π/2)
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求导~(1)y=1/x(2+5x)^10(2)y=xsin(2x+π/2)cos(2x+π/2)求导~(1)y=1/x(2+5x)^10(2)y=xsin(2x+π/2)cos(2x+π/2)求导~(
求导~(1)y=1/x(2+5x)^10 (2)y=xsin(2x+π/2)cos(2x+π/2)
求导~(1)y=1/x(2+5x)^10 (2)y=xsin(2x+π/2)cos(2x+π/2)
求导~(1)y=1/x(2+5x)^10 (2)y=xsin(2x+π/2)cos(2x+π/2)
1.y'={1'×[x(2+5x)^10]-[x(2+5x)^10]'×1}/[x(2+5x)^10]'.继续化简即可.
2.y'=(-xcos2xsin2x)'=-0.5×(xsin4x)'=-0.5×(4xcos4x+sin4x).