How to add a constant to a symbolic array element by element?

My code is as follows

Mr_theo = (W_R + Up)./a2;

where W_R is a 1x1 double, Up is a 100x1 symbolic array, and a2 is a 100x1 symbolic array. All numbers are positve, however, they consistently are yeilding a negative number, which makes no sense to me at all. Is this a syntax error? the addition of W_R and Up is causing matmatical errors.

[madhan ravi]

W_R, Up, a2 could you attac them as .mat file?

[Leigh Harrison]

Hi, yes - could you explain how I can save individual variables as .mat files?

[madhan ravi]

save VARiables.mat W_R Up a2

[Leigh Harrison]

thank you!

Answer 1

[madhan ravi]

They are not negative numbers but probably represented in scientific notations.

format longg % at the beginning 

Because the answers I get is all positive.

[Leigh Harrison]

So when I run the same formula in a new script all my numbers work, but when I run the script all together (even in a new m file), it outputs the incorrect negative stuff. This really confuses me - the format longg did not change it. Any more ideas?

[madhan ravi]

could you share your result as .mat file?