![]() ![]() %Two groups of M/D/1 queues of size i n, each with load ?i and service time bi ,i = 1,2 %Convolution of waiting times in M/D/1 queues having different service times I have written an M-file named Eq38 as follows: I've just checked and in release R2009b, the message that appears in theĬannot compute the number of steps from 1 to z by 1. ![]() Variables, you must substitute in a value for those variables (using SUBS)īefore trying to use it as a limit or increment in the FOR loop. If the expression you're using in the loop does contain some symbolic There is a symbolic expression involved that symbolic expression does notīut this would not, since we can't tell how many times to iterate on the FOR So for instance, this would work, since while You can't do a FOR loop over a symbolic expression if that expressionĬontains a symbolic variable. > It seems that I have to change definition of symbolic variables with subs > If the input expression contains a symbolic variable, use the VPA function > DOUBLE cannot convert the input expression into a double array. ![]()
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