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三角函數不等式 - 相關部落格
第0 章0.1 數(Numbers)、 區間(Intervals)、 不等式(Inequalities) 0.7 三角函數. ... 0.2 函數. 例0.1.6. 解以下各不等式: (1) 2x − 3 < x + 4 ≤ 3x − 2,. (2) x3 > x,. (3) (2 − x)(1 + x)2x3 ≥ 0,. (4) −2 < ... (2) |a + b|≤|a| + |b|(三角不等式),.
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不等式 跳到 有关三角函数、指数函数、对数函数的不等式 - 1) sinx
高中三角函数不等式 - 爱问知识人 高中三角函数不等式设A,B,C为三角形的三个内角，证明(cosA)^2+(cosB)^2+(cosC)^2≥3/4.9/4≥(sinA)^2+(sinB)^2+?
