(2kπ-π/2,2kπ+π/2)∩[-5,5]
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(2kπ-π/2,2kπ+π/2)∩[-5,5]
(2kπ-π/2,2kπ+π/2)∩[-5,5]
(2kπ-π/2,2kπ+π/2)∩[-5,5]
[-5,-3π/2)∪(-π/2,π/2)∪(3π/2,5]
2kπ+π
kπ-2π/3
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下列终边相同的角是【选择题.】A.kπ+π/2与k*90°,k∈ZB.(2k+1)π与(4k±1)π,k∈ZC.kπ+π/6与2kπ±π/6,k∈ZD.(kπ)/3与kπ+(π/3),k∈Z
一[2kπ+a,2kπ+b](k属于Z,0
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(k*k*k-2k+4)/4k
(2kπ-π/2,2kπ+π/2)∩[-5,5]
与300°终边相同的是 A.kπ+π5/3(k∈z) B.2kπ-1π/3(k∈z) C.kπ与300°终边相同的是A.kπ+π5/3(k∈z)B.2kπ-1π/3(k∈z)C.kπ+6π/11(k∈z)D.2kπ+1π/3(k∈z)
编一个程序求π的近似值#include void main(void){double x,y,k=1;while (y>=1e-6){ if(k>0){x=4*1/k+x;y=1/k;k=(k+2)*(-1);}else{k=k*(-1);x=4*1/k*(-1)+x;y=1/(k*(-1));}}cout
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不等式tanx≦-1的解集是选项:A.(2kπ-π/2,2kπ-π/4](k∈Z) B.[2kπ-π/4,2kπ+3π/2](k∈Z)C.(kπ-π/2,kπ-π/4](k∈Z) D.[2kπ+π/2,2kπ+3π/4](k∈Z)