How can i find a power series for this integral?

[sportlover36]

how can i find a power series for this integral? $$\int cos(x^3)$$

 

[tiny-tim]

Hi sportlover36!

(have an integral: ∫ and a sigma: ∑ and try using the X² tag just above the Reply box )

Just write out the series for cosx, and then write x³ everywhere instead of x.