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已知一次函数eqId6f13759e937144069819aed2ae5a1057满足:eqId1ee74599dede4cf5b4c6b3236fe72d1b.
(1)求eqId6f13759e937144069819aed2ae5a1057的解析式;
(2)判断函数eqId03a3bcc69cf3464087f6b026fd7e4890在区间eqIdf2d609401847417a9401bda04026575f上零点的个数.
更新:2020/04/05 难度:0.85 题型:解答题 组卷:46
一次函数g(x)满足g[g(x)]=9x+8,则g(x)是(  )
A.g(x)=9x+8B.g(x)=3x+8
C.g(x)=﹣3x﹣4D.g(x)=3x+2或g(x)=﹣3x﹣4
更新:2020/03/31 难度:0.85 题型:单选题 组卷:614
已知函数eqIdbda7916b74154aa49353bb1f356d91a8eqId2341199a7a6c4b29922562afcf6a87dc,则eqIde187b07e9f7a40729f5a25c6b100ba4e______.
更新:2020/03/30 难度:0.94 题型:填空题 组卷:0
已知eqId117dc5279673499cbc3c24288dd0bdd0,则曲线eqId9b37d03e47a347fc8fab9f814ba5fac4在点eqIde0eb07e98d50461d8d52c3a058049988处的切线的斜率为(   )
A.eqId62eff4e5932b443ebd29c070574afa79B.eqIde8482ece2b0f47709b8991fa0223409bC.eqId836db6d106e440cd9e5ec0272122b7bbD.eqId0ce2cd9751954d7baef2071a85f25931
更新:2020/03/26 难度:0.65 题型:单选题 组卷:0
已知函数eqId2913de8605f34b33b7ecfc8234649c6ceqId4dcf6abd5a3647db870fedc0e6725771,则eqId02495ec46faa4280900ad39fd1fdb0b3________.
更新:2020/03/18 难度:0.85 题型:填空题 组卷:5
已知二次函数eqId144eff5c0e4649138a21f2b1b6a06907满足eqIdf67c36b265fb4ef58d857d4aeddb3b21,且函数eqId6f13759e937144069819aed2ae5a1057的最大值为2.
(1)求函数eqId144eff5c0e4649138a21f2b1b6a06907的解析式;
(2)求函数eqId144eff5c0e4649138a21f2b1b6a06907eqIdba616cce2e3648f8b958a9872a2cc59d上的最大值.
更新:2020/03/17 难度:0.65 题型:解答题 组卷:86
设函数fx)=-x+2,则满足fx-1)+f(2x)>0的x的取值范围是______.
更新:2020/03/17 难度:0.94 题型:填空题 组卷:354
销售甲、乙两种商品所得利润分别是eqId6f16877e533c474397de5e93c48d4b8c万元,它们与投入资金eqId8e15963708e9415da25069fea5906e24 万元的关系分别为eqId1bf24a11e4e3497bb00716b4a0383e0beqId09fa66c5f9aa4f8b9bb85b9bb793eba1,(其中eqId85512151f3d64a15bc93521c61f03232都为常数),函数eqId6f16877e533c474397de5e93c48d4b8c对应的曲线eqIdcfc8599bedfb4ab4944abf141f348a9aeqId3a63d00111554b9e8b896929779a293d如图所示.
figure
(1)求函数eqId60c0ad1c60424cd4b40f29859b9ed766eqId09a342dba99843be977b46288ed55c00的解析式;
(2)若该商场一共投资4万元经销甲、乙两种商品,求该商场所获利润的最大值.
更新:2020/03/17 难度:0.85 题型:解答题 组卷:96
已知函数eqId9e795789ea8944ba9ec703e45229e297,若eqIdb86f8ddbb24b4f18900fa3eb69b55b5feqId26b969e4f86f485c8b4b5e1e8e013106,则方程eqIdfb1f22cc42534367b7a83bf58f5ba2f0 的解为(   )
A.eqIdfcc58431683b452ca65d1d9977a280bdB.eqId8d4dc247efd342d2882d4968f087d636C.eqIddb6d5a447c0d4df69ad076fee9a03ea6D.eqIdf002641614774c44a4d5ab21611f5e88
更新:2020/03/15 难度:0.85 题型:单选题 组卷:18