1.lim(2x-sinx)/(2x+sinx) (x→0)2.lim(sinsinx)/x (x→0)3.lim 4/y (y→∞)
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1.lim(2x-sinx)/(2x+sinx)(x→0)2.lim(sinsinx)/x(x→0)3.lim4/y(y→∞)1.lim(2x-sinx)/(2x+sinx)(x→0)2.lim(si
1.lim(2x-sinx)/(2x+sinx) (x→0)2.lim(sinsinx)/x (x→0)3.lim 4/y (y→∞)
1.lim(2x-sinx)/(2x+sinx) (x→0)
2.lim(sinsinx)/x (x→0)
3.lim 4/y (y→∞)
1.lim(2x-sinx)/(2x+sinx) (x→0)2.lim(sinsinx)/x (x→0)3.lim 4/y (y→∞)
1.应用洛必达法则,上下分别求导,变为lim(2-cosx)/(2+cosx)=1/3
2.同上,上下分别求导,得到lim cos(sinx) * cosx=1
3.简单极限,直接得到结果0
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1.lim(2x-sinx)/(2x+sinx) (x→0)2.lim(sinsinx)/x (x→0)3.lim 4/y (y→∞)
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