若数列
, 则数列
发散
- 正确
- 错误
若数列
, 则数列
发散
+sin dfrac (pi )({2)^n}+... ;
2.已知数列(xn),其中 -dfrac (pi )(2)leqslant (x)_(n)leqslant dfrac (pi )(2) ,则 ()-|||-(
=dfrac ({n)^2h}(8m/{s)^2}-|||-B omega =(x)=sqrt (dfrac {2)(t)}sin (dfrac ({n)^2p
__-|||-lim _(narrow infty )([ sin (dfrac {pi )(4)+dfrac (1)(n))] }^n=( )A.
+dfrac (sin n)({2)^n} ;-|||-(2) _(n)=1+dfrac (1)({2)^2}+dfrac (1)({3)^2}+... +df
+dfrac (1)({(2n-1))^2}(2n-1)x+... ] -|||-(B) dfrac (2)(pi )[ dfrac (1)({2)^2}sin
(sin )^2(2)^nxleqslant dfrac ({3)^n}({4)^n}
lim _(narrow infty )(tan )^n(dfrac (pi )(4)+dfrac (2)(n)) __-|||-__
AL tire n与必的形场-|||-α2-|||-出 N l square =aot(pi -a) .=dfrac ({mu )_(0)}(4pi )dfra
[例15](2022,数一,数二)已知数列(xn),其中 -dfrac (pi )(2)leqslant (x)_(n)leqslant dfrac (pi )