Solve using graph:
1) sin4(x3)+cos4(x3)≥12 \large \sin^4 \left(\frac x3\right) + \cos^4 \left(\frac x3\right) \geq \frac12 sin4(3x)+cos4(3x)≥21
1) (5−2sin(x))12≥6sin(x)−1 \large (5-2\sin(x))^{\frac12} \geq 6\sin(x) - 1 (5−2sin(x))21≥6sin(x)−1
Note by Avn Bha 5 years, 11 months ago
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Easy Math Editor
This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.
When posting on Brilliant:
*italics*
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or__bold__
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paragraph 2
[example link](https://brilliant.org)
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to ensure proper formatting.2 \times 3
2^{34}
a_{i-1}
\frac{2}{3}
\sqrt{2}
\sum_{i=1}^3
\sin \theta
\boxed{123}
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