lim(n→∞) {1+2/n}^kn =e^-3.则k=?
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lim(n→∞) {1+2/n}^kn =e^-3.则k=?
lim(n→∞) {1+2/n}^kn =e^-3.则k=?
lim(n→∞) {1+2/n}^kn =e^-3.则k=?
lim(n→∞) {1+2/n}^kn =lim(n→∞) {1+2/n}^[(n/2)2k] =e^(2k)
e^(2k)=e^(-3)
2k=-3
k=-3/2
2/e^-3
lim(n→∞) {1+2/n}^kn =e^-3.则k=?
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