MATLAB: How to round a symbolic value to 1 decimal place

errormatricesmatrixmatrix manipulationroundroundingsymbolictoo many input arguments

The error I keep getting:
"Error using sym/round Too many input arguments."
How: I am trying to do simultaneous equations with two matrices with symbolic values J,K, and L (and others) like so:
disp('The problem is to find what fraction of groups g_1 g_2 and g_3 are required to create the optimal "TARGET"')
syms J  K  L  g_1  g_2  g_3  traget  TARGET  p_1  p_2  p_3  Grp tGrp invtGrp  Tar tTar      
disp('Given:')
g_1 = 0.1*J + 0.2*K + 0.7*L                                                
g_2 = 0.2*J + 0.6*K + 0.2*L 
g_3 = 0.8*J + 0.1*K + 0.1*L 
traget = 0.2*J + 0.4*K + 0.4*L                                                 
disp('In order to solve the problem:')
TARGET = p_1*g_1 + p_2*g_2 + p_3*g_3                                          
disp('Transform "g_1, g_2 & g_3" and "Target" into matrix form:')
Grp = [0.1*J 0.2*K 0.7*L ; 0.2*J 0.6*K 0.2*L ; 0.8*J 0.1*K 0.1*L]           %%The matrix from the sources
Tar = [0.2*J 0.4*K 0.4*L]                                                   %%The matrix for the required mix
disp('In order to find p_1 p_2 and p_3, I need to transpose and put these matrices into " A*x = B " form')
tGrp = transpose(Grp)
unknowns = [p_1 ; p_2 ; p_3]
tTar = transpose(Tar) 
disp('Therefore transpose(S)*(p_1 p_2 p_3)= transpose(M) ,and therefore inv(transpose(S))*transpose(M)=(p_1 p_2 p_3)')
invtGrp = inv(transpose(Grp))
Fractions = invtGrp*tTar
Temp = invtGrp*tTar*100;
round(Temp,1)              %%ERROR This should round the three values in the 3x1 matrix to one decimal place, BUT I keep getting the error above.
Thank you for your help.

Best Answer

round(double(Temp),1)
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