In Exercises 9 and 10, write the matrix in row-echelon form. (Remember that the row-echelon form of a matrix is not unique.) 432811016212 0

L26 - 2 Consider the graph of f(x)s kcedbel: Where is the function f(x)c ocveupanddown Test for Concavity ▯▯ Assume that f (x)e sson( a,b). 1. If f (x) > 0f oral x on (a,b), then f 2. If f (x) < 0f oral x on (a,b), then f