- For what values of k is 9x^2+kx+16 is a perfect square?

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Base of a solid is bounded by y=2, y=arcsinx, and x=1. Each cross section perpendicular to the x-axis is a square. What is the volume? What are the principle behind measuring and laying out using tape too long and too short? Is there any good chance of finding life in our Solar system, other than our Earth? How and when did we figure out for certain that the Earth is round? Find the values of p for which the series is convergent. Sigma infinite on top and n=1 on bottom. n(1+n^2)^p?