63. Maximum Area A rancher has 400 feet of fencing with which to enclose two adjacent rectangular corrals (see figure). What dimensions should be used so that the enclosed area will be a maximum?

Q: For the function f(x) = x² + 7, find the equation of the tangent line at x = -1. Answer: Submit…

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A: By using the formula kt=r't×r''tr't3 to find kt.rt=e3t i+e-t j

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