Question: If az 2 + bz + c = 0 for more than two values of z, then a = b = c = 0. Use

If az2 + bz + c = 0 for more than two values of z, then a = b = c = 0. Use this result to show that the family {b(2, θ) : 0 < θ < 1} is complete.

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