若角α、β满足π/-2

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若角α、β满足π/-2若角α、β满足π/-2若角α、β满足π/-2没有其他条件了?这好办.2α>-π,-β>-π/2,加起来就是2α-β>-3π/2;α∵﹣π/2∴﹣π＜2α＜π,﹣π/2∴﹣3π／2

若角α、β满足π/-2
若角α、β满足π/-2<α<β<π/2,则2α-β的取值范围是

若角α、β满足π/-2
没有其他条件了?这好办.
2α>-π,-β>-π/2,加起来就是2α-β>-3π/2;
α

∵﹣π/2<α<β<π/2
∴﹣π＜2α＜π,
﹣π/2<﹣β<π/2
∴﹣3π／2＜2α-β＜3π／2

若角α,β,满足-π/2 若角α,β满足-π/2 若角α,β满足π/-2 若角α、β满足π/-2 若角α、β满足π/-2 若角α,β满足-π 若角a,β 满足 -π/2 若α,β 满足-π/2 设α,β满足条件-π/2 设α,β满足条件-π/2 若α,β满足π/2我刚刚发错了。其实是，若α,β满足-π/2 不等式 (24 20:6:15)若角α,β满足-π/2 若角A,B满足-π/2 若角A、B满足-π/2 若角A、B满足-π/2 若角a,b满足-π/2 若角a,b满足-π/2 若角A、B满足-π/2