1. Consider the sequence a₁ = cos² a. Does the sequence converge, or not? If it is convergent, find out the limit the sequence. 3πn² b. Determine whether the following series converges, or not. Explain. 3™n² n²-5 n=1 COS

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A: To determine whether the following vector field is conservative. Fx, y, z=y, x+z, y

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