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cos(2x)^2-sin(2x)^2<=sqrt(3)/2 desigualdades

En la desigualdad la incógnita

Solución

Ha introducido [src]
                           ___
   2           2         \/ 3 
cos (2*x) - sin (2*x) <= -----
                           2  
$$- \sin^{2}{\left(2 x \right)} + \cos^{2}{\left(2 x \right)} \leq \frac{\sqrt{3}}{2}$$
-sin(2*x)^2 + cos(2*x)^2 <= sqrt(3)/2
Solución de la desigualdad en el gráfico
Respuesta rápida 2 [src]
     /       _________________________________\      /       _________________________________\              /       _________________________________\           /       _________________________________\ 
     |      /                     ___________ |      |      /                     ___________ |              |      /                     ___________ |           |      /                     ___________ | 
     |     /                     /       ___  |      |     /                     /       ___  |              |     /                     /       ___  |           |     /                     /       ___  | 
     |    /            ___   4*\/  2 + \/ 3   |      |    /            ___   4*\/  2 + \/ 3   |              |    /            ___   4*\/  2 + \/ 3   |           |    /            ___   4*\/  2 + \/ 3   | 
[atan|   /    15 + 8*\/ 3  - ---------------- |, atan|   /    15 + 8*\/ 3  + ---------------- |] U [pi - atan|   /    15 + 8*\/ 3  + ---------------- |, pi - atan|   /    15 + 8*\/ 3  - ---------------- |]
     |  /                             ___     |      |  /                             ___     |              |  /                             ___     |           |  /                             ___     | 
     \\/                        2 - \/ 3      /      \\/                        2 - \/ 3      /              \\/                        2 - \/ 3      /           \\/                        2 - \/ 3      / 
$$x\ in\ \left[\operatorname{atan}{\left(\sqrt{- \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}} + 8 \sqrt{3} + 15} \right)}, \operatorname{atan}{\left(\sqrt{8 \sqrt{3} + 15 + \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}}} \right)}\right] \cup \left[\pi - \operatorname{atan}{\left(\sqrt{8 \sqrt{3} + 15 + \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}}} \right)}, \pi - \operatorname{atan}{\left(\sqrt{- \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}} + 8 \sqrt{3} + 15} \right)}\right]$$
x in Union(Interval(pi - atan(sqrt(8*sqrt(3) + 15 + 4*sqrt(sqrt(3) + 2)/(2 - sqrt(3)))), pi - atan(sqrt(-4*sqrt(sqrt(3) + 2)/(2 - sqrt(3)) + 8*sqrt(3) + 15))), Interval(atan(sqrt(-4*sqrt(sqrt(3) + 2)/(2 - sqrt(3)) + 8*sqrt(3) + 15)), atan(sqrt(8*sqrt(3) + 15 + 4*sqrt(sqrt(3) + 2)/(2 - sqrt(3))))))
Respuesta rápida [src]
  /   /              /       _________________________________\           /       _________________________________\     \     /         /       _________________________________\      /       _________________________________\     \\
  |   |              |      /                     ___________ |           |      /                     ___________ |     |     |         |      /                     ___________ |      |      /                     ___________ |     ||
  |   |              |     /                     /       ___  |           |     /                     /       ___  |     |     |         |     /                     /       ___  |      |     /                     /       ___  |     ||
  |   |              |    /            ___   4*\/  2 + \/ 3   |           |    /            ___   4*\/  2 + \/ 3   |     |     |         |    /            ___   4*\/  2 + \/ 3   |      |    /            ___   4*\/  2 + \/ 3   |     ||
Or|And|x <= pi - atan|   /    15 + 8*\/ 3  - ---------------- |, pi - atan|   /    15 + 8*\/ 3  + ---------------- | <= x|, And|x <= atan|   /    15 + 8*\/ 3  + ---------------- |, atan|   /    15 + 8*\/ 3  - ---------------- | <= x||
  |   |              |  /                             ___     |           |  /                             ___     |     |     |         |  /                             ___     |      |  /                             ___     |     ||
  \   \              \\/                        2 - \/ 3      /           \\/                        2 - \/ 3      /     /     \         \\/                        2 - \/ 3      /      \\/                        2 - \/ 3      /     //
$$\left(x \leq \pi - \operatorname{atan}{\left(\sqrt{- \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}} + 8 \sqrt{3} + 15} \right)} \wedge \pi - \operatorname{atan}{\left(\sqrt{8 \sqrt{3} + 15 + \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}}} \right)} \leq x\right) \vee \left(x \leq \operatorname{atan}{\left(\sqrt{8 \sqrt{3} + 15 + \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}}} \right)} \wedge \operatorname{atan}{\left(\sqrt{- \frac{4 \sqrt{\sqrt{3} + 2}}{2 - \sqrt{3}} + 8 \sqrt{3} + 15} \right)} \leq x\right)$$
((x <= atan(sqrt(15 + 8*sqrt(3) + 4*sqrt(2 + sqrt(3))/(2 - sqrt(3)))))∧(atan(sqrt(15 + 8*sqrt(3) - 4*sqrt(2 + sqrt(3))/(2 - sqrt(3)))) <= x))∨((x <= pi - atan(sqrt(15 + 8*sqrt(3) - 4*sqrt(2 + sqrt(3))/(2 - sqrt(3)))))∧(pi - atan(sqrt(15 + 8*sqrt(3) + 4*sqrt(2 + sqrt(3))/(2 - sqrt(3)))) <= x))