explain in a easy way

in detail, please

Currency Swap Formulas . Consider a swap in which a dollar annuity. R.is exchanged for an annuity in another currency. R . There are n payments The time-o forward price for a unit of foreign currency delivered at time is for The dollar-denominated zero-coupon bond price is Pos . Given what is R? Currency Swap Formulas (contd) . The PV of the two annuities must be the same (in one currency) ERP = -R*F,P. Then, S.P., R*F. R= . . This equation is equivalent to previous formula, with the implied forward rate, rolt-7 t), replaced by the foreign-currency-denominated annuity payment translated into dollars, R*Foti Currency Swap Formulas . Consider a swap in which a dollar annuity. R.is exchanged for an annuity in another currency. R . There are n payments The time-o forward price for a unit of foreign currency delivered at time is for The dollar-denominated zero-coupon bond price is Pos . Given what is R? Currency Swap Formulas (contd) . The PV of the two annuities must be the same (in one currency) ERP = -R*F,P. Then, S.P., R*F. R= . . This equation is equivalent to previous formula, with the implied forward rate, rolt-7 t), replaced by the foreign-currency-denominated annuity payment translated into dollars, R*Foti