sin5x-cosx=0
sinx+sin5x+sin3x=0
已知向量a=(cos5x/3,sin5x/3),b=(cosx/3,-sinx/3),x∈[0,∏/2]
已知向量a=(cos5x/3,sin5x/3),b=(cosx/3,-sinx/3),x属于【0,π/2】
lim(x→0)(sin5x)/x=?
求极限lim_{x->0} tan3x/sin5x = ( )A.0
lim(x→0)tan3x/sin5x=?
limx趋近于0时,sin3x/sin5x=?
计算极限 lim(sin3x/sin5x) x趋近于0 lim[2x²/(1-cosx)]x趋近于0
lim x→0 tan2x/sin5x
limx→0sin3x/sin5x,求极限
已知f'(0)=1,求limx→0 (f(2x)-f(5x))/sin5x=?
求极限lim_{x->0} tan3x/sin5x = ( ) A.0 B.3 C.3/5 D.5/3