I totally forgot these concepts.Need urgent help. HW01 1

I totally forgot these concepts.Need urgent help.
HW01 1. FF 2. Wa 3. PF th Find the fre ?h?t ?? F? a. Note: Write obser nd ? ? F h t ?? Plot the ma ?h?t ?? F hem. equency res h?t ? 4?? an F?h?t ?? im rvations be ? 4?? vs. F? agnitude of ?h?t ? 4?? sponse of t nd F?h?t ? 6 mplies Fouri etween ? F ?? h?t ? 6???? f the freque and F?h?t the each fu ?? er Transform h?t ?? vs. F ency respon ? 6?? and unction m of h?t? ?h?t ? 4???? nse of the write the o ? ? ? ? F h t ?? each funct observation vs. F ?h?t ? tion ns among 6????
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