Let V be the vector space of all functions from the real field R. into R. Show that the set W = {f: f(7) = 2 + f(1)} is not a subspace of V. An arch is in the from of a parabola with its axis vertical. The arch is 10 m high and 5 m wide at the base. How wide is it 2 m from the vertex of the parabola? A beam is sopported at its ends by two supports which are 12 m apart. Since the load concentrated at its center, there is a deflection of 3 cm at the center and the deflected beam is in the shape of a parabola. How far from the center is the deflection 1 cm?

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A: No, we can write it.