explain y=y+(a(f)*cos(omega*f*t)+b(f)*sin(omega*f*t)); in matlab

The line y=y+(a(f)*cos(omega*f*t)+b(f)*sin(omega*f*t)); in MATLAB is updating the value of y in each iteration according to the values of a(f), b(f), cos(omega*f*t), and sin(omega*f*t).

cos(omega*f*t) and sin(omega*f*t) are trigonometric functions with angular frequency omega and time variable t. a(f) and b(f) are coefficients that depend on the frequency f.

The values of y, a(f), b(f), omega, f, and t should be defined before the execution of this line.

This line is mainly used in signal processing and can help to simulate and generate signals with desired properties.