its using the Maclaurin series, i have already worked out the equations:(adsbygoogle = window.adsbygoogle || []).push({});

cos x = 1 - (x^2)/2! + (x^4)/4! - (x^6)/6! + (x^8)/8! - (x^10)/10! + ...

e^x = 1 + x + (x^2)/2! +(x^3)/3! + (x^4)/4! + (x^5)/5! + (x^6)/6! + ...

how do i use these two results to obtain the first 6 terms on the maclaurin series for e^x.cos x?

i've been working at this question for ages and cannot get it.

thanks heaps if anyone can help me out.

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# Need help with maclaurin series question

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