SpiritSwap V2

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SpiritSwap provides users a simple way to swap tokens on Fantom via automated liquidity pools

SpiritSwap provides users a simple way to swap tokens on Fantom via automated liquidity pools. In a swap, one token is sold to buy another token. The rate of the swap is determined by the AMM with the equation:
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$x*y=k$

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Where *x* = the number of $AAA tokens, *y* = the number of $BBB tokens, and *k* is a constant. The trader is charged a 0.18% fee to make a swap.

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In Figure 1, a trader is swapping $AAA token for $BBB tokens. The trader sends 100 $AAA tokens to the AMM. A 0.18% fee is applied and 0.18 $AAA tokens are not included in the swap. The remaining 99.82 $AAA tokens are swapped in the AMM to $BBB tokens. Since the AMM will be losing $BBB tokens, it must gain $AAA tokens to keep *k* constant. The equation:

$(1,000+99.7)*(10-y)=10,000$

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Can be solved for *y* to give the number of $BBB tokens that the trader will receive. The 0.18% fee of 0.18 $AAA tokens are directly added to the liquidity pool reserves, slightly increasing the value of *k.*

Last modified 5mo ago

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