The maclaurin series expansion for cos x is x2 x4 8 6+8! " starting with the simplest version, cos x = 1, add terms one at a time to estimate cos(7/4). after each new term is added cosx = - + compute the true and approximate percent relative errors. use your pocket calculator or matlab to determine the true value. add terms until the absolute value of the approx- imate error estimate falls below an error criterion conform- ing to two significant figures.