ϕe=(ϕP+ϕE)/2{"version":"1.1","math":"\phi_e=(\phi_P+\phi_E)/2"}

ϕe=(ϕP−ϕE)/2{"version":"1.1","math":"\phi_e=(\phi_P-\phi_E)/2"}

None of those

ϕe=(ϕP+ϕW)/2{"version":"1.1","math":"\phi_e=(\phi_P+\phi_W)/2"}

ϕe=(ϕP+ϕe)/2{"version":"1.1","math":"\phi_e=(\phi_P+\phi_e)/2"}

{"version":"1.1","math":"\Gamma_e=\frac{\Gamma_P+\Gamma_E}{2}"}ΓwAw(ϕE−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ϕP−ϕWδxWP{"version":"1.1","math":" \frac{\phi_P-\phi_W}{\delta x_{WP}}"}

(ϕE−ϕWδxWP){"version":"1.1","math":" \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ΓwAw(ϕP−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_P-\phi_W}{\delta x_{WP}}\right)"}

{"version":"1.1","math":"\Gamma_e=\frac{\Gamma_P+\Gamma_E}{2}"}ΓwAw(ϕE−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ϕP−ϕWδxWP{"version":"1.1","math":" \frac{\phi_P-\phi_W}{\delta x_{WP}}"}

(ϕE−ϕWδxWP){"version":"1.1","math":" \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ΓwAw(ϕP−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_P-\phi_W}{\delta x_{WP}}\right)"}

ϕe=(ϕP+ϕE)/2{"version":"1.1","math":"\phi_e=(\phi_P+\phi_E)/2"}

ϕe=(ϕP−ϕE)/2{"version":"1.1","math":"\phi_e=(\phi_P-\phi_E)/2"}

None of those

ϕe=(ϕP+ϕW)/2{"version":"1.1","math":"\phi_e=(\phi_P+\phi_W)/2"}

ϕe=(ϕP+ϕe)/2{"version":"1.1","math":"\phi_e=(\phi_P+\phi_e)/2"}

{"version":"1.1","math":"\Gamma_e=\frac{\Gamma_P+\Gamma_E}{2}"}ΓwAw(ϕE−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ϕP−ϕWδxWP{"version":"1.1","math":" \frac{\phi_P-\phi_W}{\delta x_{WP}}"}

(ϕE−ϕWδxWP){"version":"1.1","math":" \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ΓwAw(ϕP−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_P-\phi_W}{\delta x_{WP}}\right)"}

{"version":"1.1","math":"\Gamma_e=\frac{\Gamma_P+\Gamma_E}{2}"}ΓwAw(ϕE−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ϕP−ϕWδxWP{"version":"1.1","math":" \frac{\phi_P-\phi_W}{\delta x_{WP}}"}

(ϕE−ϕWδxWP){"version":"1.1","math":" \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ΓwAw(ϕP−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_P-\phi_W}{\delta x_{WP}}\right)"}

{"version":"1.1","math":"\Gamma_e=\frac{\Gamma_P+\Gamma_E}{2}"}ΓwAw(ϕE−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ϕP−ϕWδxWP{"version":"1.1","math":" \frac{\phi_P-\phi_W}{\delta x_{WP}}"}

(ϕE−ϕWδxWP){"version":"1.1","math":" \left( \frac{\phi_E-\phi_W}{\delta x_{WP}}\right)"}

ΓwAw(ϕP−ϕWδxWP){"version":"1.1","math":"\Gamma_w A_w \left( \frac{\phi_P-\phi_W}{\delta x_{WP}}\right)"}