l'word series

lLLawliet [19791031198220041152007]Death Note.
l (i)l (L)? l Iove you. I love you. 8
L L .
C
404
L LLalilali LOFTER.
- 1 mg/L 1,000 g/L 2. "g/ml" "mg/l" 3. 1 g 10^-6 4. 1 g/L 1 5. .
L [l] .
L DMIUltra -125.6 L15.68200.
2011 1 .

lLLawliet [19791031198220041152007]Death Note.
l (i)l (L)? l Iove you. I love you. 8
L L .
C
404
L LLalilali LOFTER.
L [l] .
L DMIUltra -125.6 L15.68200.
2011 1 .
We expand the expression:
g(x) = \left(\sqrt{2} \sin x + \frac{1}{\sqrt{2} \sin x}\right)^2 = 2 \sin^2 x + 2 + \frac{1}{2 \sin^2 x}
Let $ y = \sin^2 x $, where $ y > 0 $. Then:
g(x) = 2y + 2 + \frac{1}{2y}
We minimize $ 2y + \frac{1}{2y} + 2 $. Let:
h(y) = 2y + \frac{1}{2y}
Using the AM-GM inequality:
2y + \frac{1}{2y} \geq 2\sqrt{2y \cdot \frac{1}{2y}} = 2
Equality holds when $ 2y = \frac{1}{2y} \Rightarrow 4y^2 = 1 \Rightarrow y = \frac{1}{2} $.
g(x) = h(y) + 2 = 2 + 2 = 4