why do i get this error in line 15? "Subscript indices must either be real positive integers or logicals."

[Jan]

Please post code as text, not as screen shot.

Answer 1

[Jan]

Your x(1) is 1.96. Then in the first iteration, where e=1, fj{x(e)} tries to use 1.96 as index of the cell array fj. But as the error message tells you, indices must be positive integers.

I guess you want:

fj(e) = ...

Read doc cell concerning the curly braces and cell arrays.

Are you sure that e and i should be symbolic variables?

[fatemeh p]

yeah i think i made a mistake there they are not it worked thank you