EDITED
n=input('value of n?')
syms(sym('a',[1 n]))
a=(sym('a',[1 n])) %storing symbolic variables in a vector for convenience and also to use indexing
command window displays:
value of n?10
n =
10
a =
[ a1, a2, a3, a4, a5, a6, a7, a8, a9, a10]
>> a(1:6)
ans =
[ a1, a2, a3, a4, a5, a6]
>>
The above is strictly not recommended though please see http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval
