Question

Find the first four nonzero terms of the Maclaurin series for the function by using an appropriate trigonometric identity or property of logarithms and then substituting in a known Maclaurin series.

Answer 1

where to begin?

Answer 2

with a can of beer :DD

Answer 3

ha I don't think so

Answer 4

lol what does sin^2(x) equal to?

Answer 5

I'm trying to figure that out.. ?

Answer 6

(1/2) - (1/2)cos(2x)

Answer 7

find the first 4 terms of cos(x), the replace x with 2x. then simplie

Answer 8

*simplify*

Answer 9

im not sure how you got, (1/2) - (1/2)cos(2x)?

Answer 10

it's just one of those identities that you need to memorize