Given a quadratic function f(x) = 1 2xtax bt x + c, where a is general symmetric positive definite, we will make one steepest gradient descent step from x₀ to minimize f. suppose we choose x₀ such that x₀ x is an eigen vector of a, associated with eigenvalue. what is the error e₁ after the rst step?

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.