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单选题 已知函数y=f(x)是R上的偶函数,且在区间(0,+∞)内是减函数,那么它在区间(-∞,0)内是( )
学科：中职数学普测专题
时间：2024-02-25 23:58:23
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题目1单选题
下列函数中,在区间<img src="https://tihai-oss-cloud.itihey.com/img/18cc9961cc23f7c0bfd4adc12b82e925.png">内单调增加的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/a693f74a6ab654d6fc05972113f41041.png">B. y=x2C. <img src="https://tihai-oss-cloud.itihey.com/img/d91c9ee8800867e6c9f4ea8d02f85958.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/2147e20b9141d3074908d02eab8af4a7.png">
题目2单选题
已知函数<img src="https://tihai-oss-cloud.itihey.com/img/835f7d84c98ce1ca943857a0bcc2fe74.png">,则该函数的最小值为( )A. 1B. -1C. -2D. 0
题目3单选题
函数<img src="https://tihai-oss-cloud.itihey.com/img/122c53486b96898ba9dcdf2fe1052163.png">的定义域为( )A. (-∞,1]B. [0,1]C. (-∞,0]∪[1,+∞)D. [0,+∞)
题目4单选题
已知函数<img src="https://tihai-oss-cloud.itihey.com/img/77fda3f80b491f39355384f36237c9e9.png">是偶函数,则( )A. <img src="https://tihai-oss-cloud.itihey.com/img/cc9652a6adddc2078adb51104b165182.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/20839b3639d67130a0e0ce6b2568d49e.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/10b039923c5319c30abaae6fcb586e07.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/073cfd47e4eef016db5b58b126f96705.png">
题目5单选题
函数<img src="https://tihai-oss-cloud.itihey.com/img/0abb431ec5f6f7013e5c41dac589603b.png">的定义域是 ( )A. <img src="https://tihai-oss-cloud.itihey.com/img/1f6662313ffe5b37d60970e6c322b107.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/80198b5c564f88d117d994f056e73f19.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/d0029940b91a9f675039dc31200707ad.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/020ef87ca21db93bc170bea45f87b53c.png">
题目6单选题
已知<img src="https://tihai-oss-cloud.itihey.com/img/8189741342f215d937bef556d7471fae.png">是偶函数,且<img src="https://tihai-oss-cloud.itihey.com/img/65f33ecc8ffb01f5ef8cb6dc14e41f4d.png">,则<img src="https://tihai-oss-cloud.itihey.com/img/2d8144cc2a1470bec623c28fee9a6f00.png">=( )A. -2017B. 2017C. 1003D. -1003
题目7单选题
若f(x)在区间<img src="https://tihai-oss-cloud.itihey.com/img/3ac958da88ddc9dc445d8086a27819c4.png">内是奇函数,且f(-2)=8,则f(2)=( )A. 不确定B. ±8C. 8D. -8
题目8单选题
下列函数为偶函数的是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/5a06224f3b983c599eb87581cf6b3ba7.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/7230e8b94eb3da1484e7be27a3e76516.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/efc487b0a408ee0b639a2f043062b695.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/0e8e96b75efca246eea022089b5c89f4.png">
题目9单选题
要使函数<img src="https://tihai-oss-cloud.itihey.com/img/fd187215f9d32b1fa44f2dbda79b8ddd.png">有意义,则x的取值范围是( )A. <img src="https://tihai-oss-cloud.itihey.com/img/752705bf5c69ccba60be1f84abfa2e7f.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/f73b8c753006822524cc2a99528d302d.png">C. RD. <img src="https://tihai-oss-cloud.itihey.com/img/8b00dcffe56a4a679ddae5bd25b3e92b.png">
题目10单选题
已知函数y=f(x)是R上的偶函数,且在区间(0,+∞)内是减函数,那么它在区间(-∞,0)内是( )A. 增函数B. 没有单调性C. 都有可能D. 减函数
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