For the following function (a) tell whether it would open up or down on a graph, (b) find the vertex, and (c) find the axis of symmetry.

(a) compute the maclaurin polynomial m2(x) for f(x) = cos x. (b) use the polynomial of part (a) to estimate cos π 12. (c) use a calculator to compute the error made using the estimate from part (b) for the value of cos π 12. remember that the error is defined to be the absolute value of the difference between the true value and the estimate.

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')