RDP 8707: Asymmetric Information and Bid-Ask Spreads in the Eurocurrency Markets Equation (5)

σ ε 2 σ ε 2 + a 2   σ u 4 σ x 2 k≡Rk MathType@MTEF@5@5@+=feaagCart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=xfr=xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaSaaaeaacqaHdpWCdaqhaaWcbaGaeqyTdugabaGaaGOmaaaaaOqaaiabeo8aZnaaDaaaleaacqaH1oqzaeaacaaIYaaaaOGaey4kaSIaaeyyamaaCaaaleqabaGaaGOmaaaakiaaykW7cqaHdpWCdaqhaaWcbaGaaeyDaaqaaiaaisdaaaGccqaHdpWCdaqhaaWcbaGaaeiEaaqaaiaaikdaaaaaaOGaae4AaiabggMi6kaabkfacaqGRbaaaa@4EDD@