MATLAB: Finding an output from a matrix using a single syntax

matrix

Hi there guys I have a question. How do you get a single line output out of a matrix? for example here is the matrix:
Q =
    10    20    30    40    50    60    70
     8     9    10    11    12    13    14
    33    30    27    24    21    18    15
    28    35    42    49    56    63    70
    36    45    54    63    72    81    90
    -1    -2    -3    -4    -5    -6    -7
    64    69    74    79    84    89    94
and I am required to find:
R = [33 9 30 74 -4 72 63 15]
how do I get it using a single syntax? I've been struggling since I am just new into using Matlab. please help me…

Best Answer

R=[Q(3:6:18) Q(21:6:45)]
Edit, there's one shorter version
R=Q([3:6:18 21:6:49])
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