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physics? Graph f(x) = (x-1)(x+2) find the domain, vertical asymptote, horizontal asymptote, x-intercept, and y-intercept? How much will it cost to send a human to Mars? If z lies on |z|=2 show that |1/z^4-4z^2+3|<=1/3? 2 sounds of 3000Hz & 6000Hz frequencies emerge from .50m diameter circular opening of speaker. Find diffraction angle for sound of each freq?