Troubleshooting - A Guide to MATLAB for Beginners and Experienced Users - page 285

Optimization terminated successfully.
ans =
18.6667
9.3333
9.3333
9.3333
Nerv must spend 18 3 hours with the quarterback and 9 3 hours with
each of the other three groups. Note that the total is less than 50, leaving
Nerv some free time to look for a job for next year.
Problem 10
syms V0 R I0 VT x
f=x-V0+R*I0*exp(x/VT)
f=
x-V0+R*I0*exp(x/VT)
(a)
VD = fzero(char(subs(f, [V0, R, I0, VT], [1.5, 1000, 10ˆ(-5),
.0025])), [0, 1.5])
VD =
0.0125
That's the voltage; the current is therefore
I = (1.5 - VD)/1000
I=
0.0015
(b)
g = subs(f, [V0, R], [1.5, 1000])
g=
x-3/2+1000*I0*exp(x/VT)