A Question About User Input Function

How Can I Save several Functions ( Which Are Defined By Syms Command ) into an array Like F(i) And recall them using F(2) Or F(5)...

Or in The Another Word I want To Get Several Functions By User Input And Save Them To Recall Them when i want... something like this:

syms x y
num=input('Enter The Number Of Function You Want To Enter')
for  i=1:num
F(i)=input('Enter The i'th Function')
end