组卷网>知识点选题>几何意义法求最值
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| 共计 2036 道试题
单选题 | 较易(0.85) | 2021·浙江高二期末
1 . 已知实数xy满足eqIdec35301a4c1d4460946daa84b540179ceqId427c5564167644c6a23346f6d33931c1,则z的最大值为(   )
A.6B.3C.0D.eqId3b29afc35d5a4bdfab8a0674ec37b12d
更新:2021/06/16组卷:0
填空题 | 一般(0.65) | 2021·全国高三其他模拟(文)
2 . 若eqId7325f59d822c4c318b79153587a4f903满足约束条件eqId09c3066bd7cd4fcaa4371a29d6275630,则eqId2fe9c282900245c8a3d71f858046c892的最小值为___________.
单选题 | 较易(0.85) | 2021·贵州高三期末(文)
3 . 已知xy满足约束条件eqId861a791dff1d4f8db73be7da8955b29c,则eqIdb196ce98964a4ffd893b3a2faa05ac04的最大值是(   )
A.4B.10C.6D.8.
填空题 | 一般(0.65) | 2021·浙江高二期末
4 . 若实数x,y满足的不等式组eqId254bdc813e5644eeb567c03caefe62b3表示的平面区域是直角三角形区域,则eqIddb105e774a464eac8a919d1c06232aba的取值范围是___________
更新:2021/06/14组卷:0
单选题 | 容易(0.94) | 2021·浙江高二期末
5 . 已知实数xy满足eqIdb9d2c5654bdd4d8a8799b291fdac5028eqId3330f951ffe4430ebdc372c405dd42e9的最小值是(   )
A.eqId3b29afc35d5a4bdfab8a0674ec37b12dB.eqIdbeffaaf8d5cd43cf8375210d69fce6beC.eqId6b2724baa0064c51b2ba39f5b281a1ebD.9
更新:2021/06/14组卷:0
6 . 若eqIda9cd3f94eb8045438f75e9daccfa7200eqId072d7d6b911b42bc89207e72515ebf5f满足约束条件eqId49d74e30f7824eba914962d3e992f781,则eqId890606a5fd824d15a64f6056741aeb81的取值范围是(   )
A.eqId6d8a895314324f81a5ab4c8113a49692B.eqId9b45b5cc025f46c8abaeed329175dcafC.eqId1f0bdf0905964de69974073a47e88e98D.eqId644b9483949946ec9f8b79f427038862
双空题 | 容易(0.94) | 2021·浙江高三其他模拟
7 . 若实数eqIda9cd3f94eb8045438f75e9daccfa7200eqId072d7d6b911b42bc89207e72515ebf5f满足约束条件eqIdc3ff10ad89d64c58984d2869df92b7b2eqId53579c942ece48a291596c18ca15f13a的最大值是___________eqId34d322d58ef3483387c6ef9abd583daf的最小值是___________.
单选题 | 较易(0.85) | 2021·浙江高考真题
8 . 若实数xy满足约束条件eqId481e99d912cb460983f8e1f0da6fd311,则eqId896442fbe3ab4412aa0593eef37bc559的最小值是(   )
A.eqId5c1c12d4b3ba4aaab6267324ae66c81eB.eqId74f672b1271642a8983d0b66ebc25208C.eqIdfcc58431683b452ca65d1d9977a280bdD.eqIdd4502002459e43f9a69e9f8c61d3b57d
单选题 | 较易(0.85) | 2021·全国高考真题(文)
9 . 若eqId7325f59d822c4c318b79153587a4f903满足约束条件eqIdac20bf84c0db498589eb6b4eb6725315eqId0374de110b19461eb9736bf868018892的最小值为(   )
A.18B.10C.6D.4
10 . 若eqIda9cd3f94eb8045438f75e9daccfa7200eqId072d7d6b911b42bc89207e72515ebf5f满足约束条件eqIdd6070603409242498f535dba27110774,则eqId2fe9c282900245c8a3d71f858046c892的最大值为______.
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