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# June 2017 FP3 Maclaurin Series Question watch

1. How am I meant to show that ? Is this just a case of inserting the fist 2 terms of the series -sinx into the series for ln(1+x)?
2. (Original post by Milliejp)
How am I meant to show that {ln(1-sinx )=-x-1/2 x^2-1/6 x^3-1/12 x^4}? Is this just a case of inserting the fist 2 terms for -sinx into the series for ln(1 x)?
If you're using the expansion of ln(1-x), then you want the first two terms in sin(x), rather than -sin(x). Other than that, yes.
3. (Original post by ghostwalker)
If you're using the expansion of ln(1-x), then you want the first two terms in sin(x), rather than -sin(x). Other than that, yes.
Thank you!

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