价值评估中，选择折现率的原则 未知类型：{'options': ['[tex=11.071x1.286]5LFtV+PMmjAedY7I1umRsT1Chrdy+XGoLjoAzyRbEgPcCHWJqhsIGXOaOnHdCEnP[/tex]', '[tex=11.071x1.286]YwjlYVb2FaDxvMr5nWUyYfL8auhr5cIJELsXcZREtzgYJs0Noh1XcPRCwSmJ1jKG[/tex]', '[tex=11.071x1.286]XQ5JUYmTIO10o9dxVMYhJ0ZJAENuGRRico1zWoCNr9HfLdKqCNxCzZ8firnS4CAK[/tex]', '[tex=7.143x1.286]sfXZD4OE6Wtbj3VcJtYet2+jFaOQ1cmJeEf+B/0jbp0=[/tex]'], 'type': 102}

[tex=11.071x1.286]TnjgfsRf/cX4Nqc+jDniFHLreenVLIAXjVJMtEhLmEViyb04uszbAlSrjksfqnTC[/tex]

证明[tex=11.071x1.286]tU+JiXb7a0nfwFNsau2mcdiuwawqHUKfQsY4R2AentLyENJhH514zV816BfSeLpX8VRt2rDABQh7/Qkb9MT9Fw==[/tex]。

求函数的二阶导数：[tex=11.071x1.286]2aGgMaZBmZqbL0iVCIA3ffCoAtmzM8cZ15NGa3h79lPbT57lmErGSjLTEbo/V2RK[/tex] .

完成并配平反应方程式[tex=11.071x1.286]oChKix0iD66hKz4ck/AcEEB2+I+w9j9lNsctxD6WRpthDidXMaDTxw/72lkWlO5CbDaJdXCWEqwVk+jvRkuP8Q==[/tex]

[tex=16.429x1.286]HTYETAXZ1R/3HwH5Hnz7V7uOU6ylVRkvM0EydFYOyhqrsLNRePeT36NuE8NRpN1YTOi64QoZvFiZpyoQAmE+MQ==[/tex][tex=5.429x2.786]fnpmC2J6JmQBLyo5NmGAz7WtuUuyrePgFhnl/p5QXbrEZ2Zpbq+BkfQeFJVrfpJrONjdjtNKVCreGITAjvxBFQ==[/tex][tex=11.071x1.286]OxuLTHGg16yIesD35PEsMU37uojG7b9rAsr91qei2KPKTbKL4QjEKOgne6xxvzDe[/tex]

下列选项为某变速器一、二、三、四挡的传动比，则三挡的传动比为（）。 A: 0.969 B: 1.286 C: 1.944 D: 3.455

[tex=2.929x1.286]p3y2AkBvj4VeXD0t3hDKhg==[/tex][tex=7.786x2.786]fnpmC2J6JmQBLyo5NmGAz6M1T9pdiyiUTCqjmZ5M2BCmBHxx+nAll0xIm2WO7S9xe3uBkyW7GfWWcPCqRFkpTF8PVVi78J/ZB2j/yOkuMn0=[/tex][tex=13.714x1.286]lkYFCzUvZXH/qTAQTED5VhSDULRYoU34ddtT4ZjhtEeiJeHNo9Bpgu7ITMp6UvUMYDVsVd2W5hgTMGzOAjCTpw==[/tex][tex=11.071x1.286]MkCxNfEU9WY57v1GWGnwOUxj6OGISntC0pfTEu+wlLhFk8K3UsL4kgN3HehgIyBc[/tex]

指出数集的上确界与下确界(如果存在)，并验证之： [tex=11.071x1.286]0MgNwsHnI74ze8R0vtVEOXP0Jz+Uhy3ZQhA5D1Mqt+kh4AltjlOblrHm1dpG4fmFnFN9CFCXTSctHKiAOj2s2nWBL8NAS0yC0c7yFzDhjK0=[/tex]。

系统特征方程为[tex=11.071x1.286]Sno9jWxSqFQCSvuPgOt3+1iYN3qoY5JfLkE7sfrioyo=[/tex]应用Routh稳定性判据，确定系统稳定时[tex=0.929x1.286]nrJzN9qRndstwtgYfof7gw==[/tex]值的范围。