Hi, I recently sat my Maths examination and there was a Maclaurin expansion question that I made an attempt at but I think it was wrong, it would be good if I could get help on this, it's too late to be of any real help but it will help me understand where I went wrong:(adsbygoogle = window.adsbygoogle || []).push({});

Obtain the first three non-zero terms in the Maclaurin expansion of (1 + sin^{2}x)

What I done here was, let f(x) = (1 + sin^{2}x) and differentiated until I got three non-zero terms when plugging in x = 0. But I'm not sure if this is "expandable" or whether I need to change sin^{2}x into something that can be expanded.

Did I do the right thing or did I make a mistake?

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# Homework Help: Maclaurin Expansion

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