sin(x的平方)-cos2x的平方 求导
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歧义:
①y=sin(x^2)-cos(2x^2)
y'=2xcos(x2)+4xsin(2x^2)
②y=sin(x^2)-cos[(2x)^2]
y'=2xcos(x2)+8xsin[(2x)^2]
③y=sin(x^2)-[cos(2x)]^2
y'=2xcos(x2)+4sin(2x)cos(2x)
④y=[sin(x^2)-cos(2x)]^2
y'=2[sin(x^2)-cos(2x)][2xcos(x2)+2sin(2x)]
①y=sin(x^2)-cos(2x^2)
y'=2xcos(x2)+4xsin(2x^2)
②y=sin(x^2)-cos[(2x)^2]
y'=2xcos(x2)+8xsin[(2x)^2]
③y=sin(x^2)-[cos(2x)]^2
y'=2xcos(x2)+4sin(2x)cos(2x)
④y=[sin(x^2)-cos(2x)]^2
y'=2[sin(x^2)-cos(2x)][2xcos(x2)+2sin(2x)]
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