Issue with 4 equations with 4 unknowns

I have an issue with this code, I am trying to figure out a,b,c,d

syms a b c d
equation1=2*(c*a-c)==(-.650034*a);
equation2=2*(c*b+(1.95*d))==.0271656*b;
equation3=(.6*d)+(3.3*b)==1;
equation4=(.6*c)+(3.3*a)==3.564;
sol=solve(equation1,equation2,equation3,equation4)

sol = struct with fields:
    a: [2×1 sym]
    b: [2×1 sym]
    c: [2×1 sym]
    d: [2×1 sym]

[Cris LaPierre]

What is the issue?

[Kaouter Essakkat]

I need exact values for a,b,c,d and i get (2*1 sym). My answer needs to be an exact value between 0 and 1, am I using the wrong function or setting it up uncorrectly?

[Cris LaPierre]

It appears there are 2 possible solutions to the equations. A quick check of the results shows that neither solution contains a result where all values are between 0 and 1, though.

Answer 1

[Torsten]

syms a b c d
equation1=2*(c*a-c)==(-.650034*a);
equation2=2*(c*b+(1.95*d))==.0271656*b;
equation3=(.6*d)+(3.3*b)==1;
equation4=(.6*c)+(3.3*a)==3.564;
sol=solve(equation1,equation2,equation3,equation4);
sol{1}.a

Brace indexing is not supported for variables of this type.

sol{1}.b
sol{1}.c
sol{1}.d
sol{2}.a
sol{2}.b
sol{2}.c
sol{2}.d

[Kaouter Essakkat]

I get this:

Brace indexing is not supported for variables of this type.

Error in untitled2 (line 7)

sol{1}.a

[Torsten]

I get

a1 = 1.3224, b1 = 0.2692, c1 = -1.3332, d1 = 0.1859

a2 = 0.8167, b2 = 0.3498, c2 = 1.4481, d2 = -0.2574

[Rachel Ong]

What is the maximum number of variables that dsolve can do ? I have a sytstem of equations but it doesnt seem to be working?

[Torsten]

dsolve or solve ?

Anyway: In principle no limit for both solvers.