Question

Using the first three terms of the Maclaurin's series, what is the value of e^cos(π/2)?

Answer 1

alma, this isn't a difficult question to answer, but I need the question to be more exact. What is the exact question? Are you to find the Mac. series for e^x and then use it to find e^cos(pi/2) or do you need to find the Mac. of e^cos(x)?

Answer 2

and evaluate at x=pi/2?