Sum of signals
"Sum" computes the pointwise sum
of two signals x1 and x2.
Warning: Note that if the input signals have different x-axis scales (sampling periods), the signal with the largest scale will be adapted automatically by interpolating between successive sample points. The type of interpolation can be set in the Basic Options menu.
y = Add([x1,x2]);
Difference, Add constant, Product,
Quotient, Rescale, Reciprocal.