求极限lim(1/n)*[(sin(pi/n)+sin(2pi/n)+.+sin(n*pi/n)] n->无穷
求极限lim(1/n)*[(sin(pi/n)+sin(2pi/n)+.+sin(n*pi/n)] n->无穷
求极限lim(n*sin(pi/n)) (n->无穷大)
求极限 lim sin pi*(n^2+1)^(1/2)
求极限 lim Sin[pi*√(n^2+1)] n→∞
证明sin(pi/n)*sin(2pi/n)*sin(3pi/n)*…sin((n-1)pi/n)=n/(2^(n-1)
三角函数恒等变形证明sin( pi/3 ) + sin( 2*pi/3) + ...+ sin( n * pi/3)=
还有一个极限也帮忙求一下:n趋向无穷时n*sin【(2*pi*根号下(n的平方+1)】,
lim(n->无穷) (tan(pi/4 + 1/n)) ^n的极限 为什么是 e^2
求助:用matlab把xn=sin(0.2*pi*n)+sin(0.4*pi*n)+sin(0.6*pi*n)+rand
哪位大哥能把xn=sin(0.2*pi*n)+sin(0.4*pi*n)+sin(0.6*pi*n)+randn(siz
求极限:lim((2n∧2-3n+1)/n+1)×sin n趋于无穷
求极限 lim x-无穷 sin(n+1)/(n+a)