[题目]设n,k为正整数,且 https:/img.zuoyebang.cc/zyb_b8e3422e2abb98a671ce682ddd3d5d64.jpgleqslant kleqslant n-|||-(1)证明: dfrac (2)(n)ln (1+dfrac (k-1)(n)pi )leqslant (int )_(dfrac {b-1)(n)pi }^dfrac (kpi {n)}|sin (x+dfrac (pi )(2));-|||-(1+x)dxleqslant dfrac (2)(n)ln (1+dfrac (kpi )(n))-|||-(2)求 lim _(narrow infty )(int )_(0)^pi |sin nx|ln (1+x)dx

A https:/img.zuoyebang.cc/zyb_49faa650c826dcd3cc546a2c70cc7539.jpgleqslant kleqs

. https:/img.zuoyebang.cc/zyb_59b3de1062e243c0b1e32e8058920d73.jpg+({x)_(n)}^2

https:/img.zuoyebang.cc/zyb_e8bd054ef3dd65e8f324cadbf8b2d8a0.jpg-beta , 且β已知 E.

https:/img.zuoyebang.cc/zyb_7951f03ce916a2297d2b38782b6a2474.jpg+(a)^2-|||-https

求证: https:/img.zuoyebang.cc/zyb_bce9089e40d955396cab9e44fd685858.jpg.4 (3)^|m+2

[题目]-|||-设 =x+-|||-A 1/2-|||-B 2-|||-C e-|||-D https:/img.zuoyebang.cc/zyb_e34c8

某天早 https:/img.zuoyebang.cc/zyb_8cea8f9e1e44fee4a53b84b1b8d04a09.jpg.9 点至晚 https

解方程 https:/img.zuoyebang.cc/zyb_7e8f43fce8d9495be1e56a8b33129708.jpg+(e)^2=0.

8.H2与O2在1000 K下,以 https:/img.zuoyebang.cc/zyb_996d918506e64e8dae1250cb0470733b.j

(13)(2010年,一)设总体X的分布为:-|||-X 1 2 3-|||-p https:/img.zuoyebang.cc/zyb_2a76612f050