EH$06"$ MATLAB: $1999$ me$.$

y$1=0\mathrm{.}5,$ kple $0\mathrm{.}5$; y$2=0\mathrm{.}3,$ kple $0\mathrm{.}3$; y$3=0\mathrm{.}2,$ kple $0\mathrm{.}2$; p$=5,$ kple $5$;

T $=$ fzero $($@ $($T$)1/$ p$-$y$1/10^($A$1-$B$1/($T $+$ C$1))-$y$2/10^($A$2-$B$2/($T $+$ C$2))-$y$3/10^($A$3-$B$3/($T$+$C$3)),400"$e $1999$ me$.$