(n→∞)时lim(2∧n)*(sin(x/2∧n))的极限x为不等于零的常数.结果是x,

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(n→∞)时lim(2∧n)*(sin(x/2∧n))的极限x为不等于零的常数.结果是x,(n→∞)时lim(2∧n)*(sin(x/2∧n))的极限x为不等于零的常数.结果是x,(n→∞)时lim(

(n→∞)时lim(2∧n)*(sin(x/2∧n))的极限x为不等于零的常数.结果是x,
(n→∞)时lim(2∧n)*(sin(x/2∧n))的极限
x为不等于零的常数.结果是x,

(n→∞)时lim(2∧n)*(sin(x/2∧n))的极限x为不等于零的常数.结果是x,
2^n=1/(1/2^n)=x/(x/2^n)
lim(2^n)*sin(x/2^n))=lim(x/(x/2^n))*sin(x/2^n)=lim x*(sin(x/2^n)/(x/2^n))=lim x*1=x

n→∞时候,
x/2∧n→0,
sin(x/2∧n)的等价无穷小是x/2∧n,
即sin(x/2∧n)→x/2∧n
lim(2∧n)*(sin(x/2∧n))=lim(2∧n)*(x/2∧n)=x