Solve 3 cos(3x) = 2 for the smallest three positive solutions. %3D Give your answers accurate to at least two decimal places, as a list separated by commas

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Q: 4. Let S be any nonempty set with the operation a * b = a. Is (S,*) a semigroup? Is it commutative?

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A: Function question

Q: Task 10 Find all n x n matrices A such that Ae; = ie; for i = 1, 2, . n.

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Q: Tollo gree а.) 180° b) 225° с.) -420°

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.