求下列函数极限limx趋向于π xsinx/(x-π)
问题描述:
求下列函数极限limx趋向于π xsinx/(x-π)
答
lim(x->π) xsinx/(x-π) (0/0)
=lim(x->π) (xcosx + sinx)
=-π怎么来的,,,,lim(x->π) xsinx/(x-π) (0/0)
=lim(x->π) d/dx (xsinx)/d/dx (x-π)
=lim(x->π) (xcosx + sinx)
=-π