If I know Initial LP Investment (USD) DepositTime ... @curvefi

Answer 2: To calculate the dollar value of your LP shares at withdrawal time, you need to first calculate the amount of tokens you will receive from the initial LP investment. This can be done by multiplying the initial LP investment by the DepositTime TokenA price. Then, you need to multiply the amount of tokens you will receive from the initial LP investment by the WithdrawTime TokenA price to determine the dollar value of your LP shares at withdrawal time. This calculation is based on the assumption that the token prices remain constant between the deposit and withdrawal times. If the token prices fluctuate, then the dollar value of your LP shares at withdrawal time will be different.

You can calculate yes (if you mean tricrypto), but the cubic root way is not exactly precise. But very very close