P-2.23 Complex exponentials obey a simple rule for the operation of time shifting: the complex amplitude experiences a phase change. Consider the complex signal z(t) = Zei10nt where Z = 7e0.3x. (a) The time-shifted version of z(t) can be represented as a new complex exponential with complex amplitude W. Thus, z(t-ta) =w(t)== Wei10nt, Determine the complex amplitude W when ta = 0.24 s.