点P在曲线y = x立方- x + 2/3上移动,在点P处的切线的倾斜角为a,则a的取值范围是RTTTTTTTTTT

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点P在曲线y = x立方- x + 2/3上移动,在点P处的切线的倾斜角为a,则a的取值范围是RTTTTTTTTTT

点P在曲线y = x立方- x + 2/3上移动,在点P处的切线的倾斜角为a,则a的取值范围是RTTTTTTTTTT
点P在曲线y = x立方- x + 2/3上移动,在点P处的切线的倾斜角为a,则a的取值范围是
RTTTTTTTTTT

点P在曲线y = x立方- x + 2/3上移动,在点P处的切线的倾斜角为a,则a的取值范围是RTTTTTTTTTT
k=y'=3x^2-1
tana=3x^2-1>=-1
所以a的取值范围[0,90)∪[145°,180)