Hi,
Seems like you are trying to use the power operator. To use it like a^b, make sure that 'b' is a scalar as it will apply the power operation to each element of 'a'. If you want to apply the operation for every element in 'a' corresponding to every element in 'b', use a.^b.
For more information about the power operator refer to this documentation: https://www.mathworks.com/help/matlab/ref/power.html
Hope this helps!
