阅读 | 回复 | 主题 | 作者 | 最后时间 |
905 | +10 | 函数y=2tan(3x-派/4)的图像的一个对称中心是( ) | 芊芊 | 13-12-18 16:20 |
786 | +9 | 已知函数f(x)=2asin(2x-派/3)+b的定义域为 | 芊芊 | 13-10-02 09:05 |
985 | +3 | 已知X+X的负一次方=3,求X的2分之1次+X的负2分之一次=? | 芊芊 | 10-05-07 19:10 |
910 | +6 | 已知sina+cosa/sina-cosa=2,求sinacosa的值 | 芊芊 | 10-01-11 22:17 |
947 | +12 | 函数y=sin(2x+5派/2)的一条对称轴方程是( ) | 芊芊 | 09-04-10 15:25 |
263 | +2 | 关于充要条件的题目? | 芊芊 | 08-12-09 17:52 |
527 | +13 | 裴老师的题篓子(5) | 裴老师(689685) | 08-06-14 22:14 |
372 | +15 | 化简 | 芊芊 | 08-06-01 22:07 |
288 | +3 | 题(5) | 芊芊 | 08-06-01 21:50 |
280 | +4 | 题(6)~ | 芊芊 | 08-05-11 07:46 |
304 | +8 | 题(4)~~~呵呵~ | 芊芊 | 08-04-26 13:36 |
274 | +4 | 题(1) | 芊芊 | 08-04-23 13:45 |
254 | +5 | 题(2) | 芊芊 | 08-04-23 13:42 |
251 | +2 | 题(3) | 芊芊 | 08-04-22 11:10 |
243 | +2 | 题~ | 芊芊 | 08-04-21 22:50 |
275 | +7 | 费解~ | 芊芊 | 08-04-21 20:20 |
189 | +3 | 呼呼 | 芊芊 | 08-04-21 08:04 |
169 | +4 | ~~! | 芊芊 | 08-04-21 07:36 |
175 | +3 | .... | 芊芊 | 08-04-20 23:36 |
252 | +9 | y=(4cos^3x-4cosx)/cosx的值域为多少? | 芊芊 | 08-04-20 22:46 |
330 | +9 | 裴老师的题篓子(3) | 裴老师(689685) | 08-04-19 00:08 |
213 | +5 | ??? | 芊芊 | 08-04-17 23:32 |
359 | +3 | 若sina+cosa=tana(0〈a〈派/2),则a属于( ) | 芊芊 | 08-04-15 09:46 |
225 | +5 | 复杂ing... | 芊芊 | 08-04-11 14:22 |
437 | +17 | 俺给数学老师们出个难题 | 裴老师(689685) | 08-04-08 14:02 |
187 | +4 | 化... | 芊芊 | 08-04-06 20:57 |
226 | +5 | 怎么回事? | 芊芊 | 08-04-04 20:13 |
384 | +6 | 设等差数列{an}的前n项和为Sn,已知S8=2,S16=10,则S24=( ) | 芊芊 | 08-03-29 16:39 |
286 | +4 | 求正弦线,余弦线,正切线? | 芊芊 | 08-03-06 13:31 |
401 | +8 | 怎么做?等差数列{an}中,前n项和Sn=an的平方+2an+a-1 | 芊芊 | 08-02-22 10:51 |