極限類.
極限類.
1、當(dāng)x趨近于0,(1-cosx)/xsinx的極限
2、當(dāng)x趨近于無窮,[(2x+3)/(2x+1)]^(x+1)的極限
3、當(dāng)x趨近于-1,[ln(2+x)]/[(1+2x)^(1/3)+1]的極限
1、當(dāng)x趨近于0,(1-cosx)/xsinx的極限
2、當(dāng)x趨近于無窮,[(2x+3)/(2x+1)]^(x+1)的極限
3、當(dāng)x趨近于-1,[ln(2+x)]/[(1+2x)^(1/3)+1]的極限
數(shù)學(xué)人氣:452 ℃時間:2020-05-15 04:05:34
優(yōu)質(zhì)解答
第一題在x趨于0的時候,1-cosx等價于x^2/2,sinx等價于x原式=lim(x^2/2)/x^2=1/2第二題原式=lim(1+1/(x+0.5))^[(x+0.5)+0.5]=e*lim根號下(1+1/(x+0.5))=e第三題x趨于-1,x+1趨于0 當(dāng)t趨于0的時候ln(1+t)等價于t,(t+1)^(...
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