Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

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**Identity****Member**- Registered: 2007-04-18
- Posts: 934

Can someone please go through the steps in showing the LHS = RHS?

Thanks

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**soroban****Member**- Registered: 2007-03-09
- Posts: 452

.

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**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

soroban, though differentials are written like this because they behave like multiplication/division *most of the time*, one can not prove an identity by using arithmetic.

Identity, you sure you have it right? I am getting that (assuming equality of mixed partials)

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

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**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

Im sure Identitys equation is correct.

Identity wrote:

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