例3计算题 (1)求极限lim(Wn+3√n-Vn-√n) (90.3) (2)求极限1im(N1+2+3+.+n-√1+2++(n-) (93.3) (3) 设函数f(x)=a(a>0,a≠1),试求 imn[( (99.3)例3 计算题 lim( 3 ) n n n n n → (1)求极限 + − − (90.3) lim 1 2 3 1 2 ( 1) ( ) n n n → (2)求极限 + + + + − + + + − (93.3) (3) 设函数 ( ) ( 0, 1) x f x a a a = ,试求 2 1 lim ln (1) (2) ( ) n f f f n → n (99.3)