how to sum a result with multiple values

a=[170;115;110;70;80;100;140;65;80;99;48];
b=[40;20;27;20;18;20;30;14;13;22;17];
k=a./(a-b)

k results in 11 values as intended, i'd like to do Kmed=k/11 how can i add the 11 values of k=a./(a-b) into 1 value without having to manually insert all 11 values and then divide by 11 ?

Answer 1

[madhan ravi]

You literally answered your own question, just use sum()

help sum

 SUM Sum of elements.
    S = SUM(X) is the sum of the elements of the vector X. If X is a matrix,
    S is a row vector with the sum over each column. For N-D arrays, 
    SUM(X) operates along the first non-singleton dimension.
 
    S = SUM(X,'all') sums all elements of X.
 
    S = SUM(X,DIM) sums along the dimension DIM.
 
    S = SUM(X,VECDIM) operates on the dimensions specified in the vector 
    VECDIM. For example, SUM(X,[1 2]) operates on the elements contained in
    the first and second dimensions of X.
 
    S = SUM(...,OUTTYPE) specifies the type in which the 
    sum is performed, and the type of S. Available options are:
 
    'double'    -  S has class double for any input X
    'native'    -  S has the same class as X
    'default'   -  If X is floating point, that is double or single,
                   S has the same class as X. If X is not floating point, 
                   S has class double.
 
    S = SUM(...,NANFLAG) specifies how NaN (Not-A-Number) values are 
    treated. The default is 'includenan':
 
    'includenan' - the sum of a vector containing NaN values is also NaN.
    'omitnan'    - the sum of a vector containing NaN values
                   is the sum of all its non-NaN elements. If all 
                   elements are NaN, the result is 0.
 
    Examples:
        X = [0 1 2; 3 4 5]
        sum(X, 1)
        sum(X, 2)
 
        X = int8(1:20)
        sum(X)             % returns double(210), accumulates in double
        sum(X,'native')    % returns int8(127), because it accumulates in
                           % int8 but overflows and saturates.
 
    See also PROD, CUMSUM, DIFF, ACCUMARRAY, ISFLOAT.

    Documentation for sum
       doc sum

    Other functions named sum

       codistributed/sum    duration/sum    sym/sum     timeseries/sum
       dlarray/sum          gpuArray/sum    tall/sum

[Opariuc Andrei]

thx :)