Write a function mydft that performs the discrete fourier transform for a signal y(t) sampled at regular time intervals. the function shall take as input the vector of instances in time measurements were taken t and the vector of measured values y. as output the function shall provide the variable a0 representing a0 and the vectors a and b containing ak and bk from the discrete fourier transform (a does not include a0 which is returned in a separate variable).

Solution: the categorization of functional and non-functional requirement are as follows: some of the more typical functional requirements include: • business rules• transaction corrections, adjustments and cancellations• administrative functions• authentication• authorization levels• audit tracking• external interfaces• certification requirements• reporting requirements• historical data• legal or regulatory requirementswhile,some typical non-functional requirements are: • performance – for example response time, throughput, utilization, static volumetric• scalability• capacity• availability• reliability• recoverability• maintainability• serviceability• security• regulatory• manageability• environmental• data integrity• usability• interoperability

In 1973 was when graphical user interfaces (guis) pioneered.

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