看清运费、商品描述、请直接下单,单本不议价,量大从优。标“现货”的当日16点前北京发货,其余的国外发货,一般2-3周可到货,个别的4-5周,急用的请咨询客服。店内没有的书,可联系客服咨询购买,发票加价3%(下单后联系客服,改价后再付款)。 Rather than a rote "cookbook" approach to problem-solving, this book offers a rigorous treatment of the principles behind the practices, asking students to harness their sound foundation of theory when solving problems. A wealth of examples illustrate the meaning of the theory without simply offering recipes or maps for solving similar problems.