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Y ' = ( (x^2 + 1)*(e^x - 2) ) ' = (x^2 + 1) ' *(e^x - 2) + (x^2 + 1)*(e^x - 2) ' = = 2x *(e^x - 2) + e^x*(x^2 + 1) y ' = (sinx )' = cosx y ' = (4x^2 - 3^x - 1) ' = 4*2x - 3^x ln 3 - 0 = 8x - 3^x ln 3