Let A be an n×n n times n real matrix with the property that AT=A. eh to the t , equals eh . Show that if Ax=λx eh x equals lamda x for some nonzero vector x in Cn, blackboard bold cap c to the n , comma then, in fact, λ lamda is real and the real part of x is an eigenvector of A. [Hint: Compute x¯¯TAx, x bar to the t eh x comma and use Exercise 23. Also, examine the real and imaginary parts of A x.]

The box plots show the distributions of the numbers of words per line in an essay printed in two different fonts.which measure of center would be best to compare the data sets? the median is the best measure because both distributions are left-skewed.the mean is the best measure because both distributions are left-skewed.the median is the best measure because both distributions are symmetric.the mean is the best measure because both distributions are symmetric