I have a system with 11 equations and 9 unknowns, how can I solve these equation sets?

I have a system with 11 equations and 9 unknowns, how can I solve these equation sets?

For example

ct=teta0+c*d+teta1p*a

gama0= teta0*a*b*c*(teta1p+d);

gama1s=(a*gama0+b)/c;

gama1c=teta0+0.75*teta1p+c*d;

wy=e*cos(tetaf)+cos(fi)......+sin(tetafp);

Wi=g*cos(tetaf)+...+cos(tetafp);

... and There are 5 more equations with tetaf, tatafi and tetafp unknowns.

known parameters:a,b,c,d,e,f and....

uknown parameters: teta0,teta1c,teta1p,gama0,gama1c,gama1s,tetaf,tetfp,fi

Answer 1

[Matt J]

See fsolve(), or if you want to put upper/lower bounds on the unknowns then see lsqnonlin().