If 𝑥 +
1
𝑥
= 2 cos 𝜃 , 𝑦 +
1
𝑦
= 2 cos 𝜑 then prove that
𝑥
2𝑦
2 +
1
𝑥
2𝑦2 = 2 cos(2𝜃 + 2𝜑)
Mathbot Says...
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.
If 𝑥 +
1
𝑥
= 2 cos 𝜃 , 𝑦 +
1
𝑦
= 2 cos 𝜑 then prove that
𝑥
2𝑦
2 +
1
𝑥
2𝑦2 = 2 cos(2𝜃 + 2𝜑)
I wasn't able to parse your question, but the HE.NET team is hard at work making me smarter.