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曲线y=ax2+x+c在点(0,c)处的切线的倾斜角为() A.900 B.600 C.450 D.300
曲线y=ax2+x+c在点(0,c)处的切线的倾斜角为() A.900 B.600 C.450 D.300
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曲线y=ax2+x+c在点(0,c)处的切线的倾斜角为() A.900 B.600 C.450 D.300
曲线y=x3-4x+2在点(1,-1)处的切线方程为()
A.x-y-2=0
B.x-y=0
C.x+y=0
D.x+y-2=0
A.0 个
B.1 个
C.2 个
D.不确定
曲线y=x3-5x+l在点(2,-l)处的切线方程为 ()
A.7x—Y一15—0
B.7x-Y+15=0
C.x+y-1=0
D.z+y+1=0
A.a=0,b=-2
B.a=1,b=-3
C.a=-3,b=1
D.a=-1,b=-1