计算limx→1 sin(x-1)/x²-1=?
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计算limx→1sin(x-1)/x²-1=?计算limx→1sin(x-1)/x²-1=?计算limx→1sin(x-1)/x²-1=?当x→1时,limsin(x-1
计算limx→1 sin(x-1)/x²-1=?
计算limx→1 sin(x-1)/x²-1=?
计算limx→1 sin(x-1)/x²-1=?
当x→1时,
limsin(x-1)/(x²-1)
=limsin(x-1)/(x-1) *1/(x+1)
=limsin(x-1)/(x-1)*lim1/(x+1)
=1*1/(1+1)
=1/2.
limx→1
limsin(x-1)/x²-1=limsin(x-1)/(x-1)(x+1)=lim1/(x+1)=1/2
0.5 洛必达法则