What is the numerical expression for the sum of negative 4 and 13 and 8

Evaluate 4 a for a = 5 2/3 . express your answer in simplest form.

(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.

Which function has the same domain as y=2x