l i m x［(x^2+100)^1/2+x］x→-∞
熱心網(wǎng)友
l i m x［(x^2+100)^1/2+x］=x→-∞ =l i m 100x/［(x^2+100)^1/2-x］= x→-∞ =l i m 100/[-(1+100/x^2)^1/2-1]=-50 x→-∞
熱心網(wǎng)友
題的意思不清.
l i m x［(x^2+100)^1/2+x］x→-∞
l i m x［(x^2+100)^1/2+x］=x→-∞ =l i m 100x/［(x^2+100)^1/2-x］= x→-∞ =l i m 100/[-(1+100/x^2)^1/2-1]=-50 x→-∞
題的意思不清.