Word Count : 95

---

Use Taylor expansions about $x=0$: $$ \cos x=1-\frac{x^2}{2}+O(x^4),\qquad \sin x=x-\frac{x^3}{6}+O(x^5). $$ Numerator: $$ x(1+a\cos x)-b\sin x = x + ________ _______ ___ _____ _________ ___ ____ _________ ______ ________ ____.
__________ ____ ____ _____ ____ ______.
____ _________ ____ _____ ________ ______ ______ _______ _________ ____ ______.
________ ________ _____ ______ _______ _________.
_________ _______ _________ ___ ________ _____.
________ ________ ________ __________ ________ ________ __________.
_________ ______ ____ _____ __________ _______.
_____ _____ _____ _____ __________ _________.
__________ ________ ________ ___ ___.
_________ ___ ________ __________ ______ ________ _____ __________ ___ _______ ______.
________.
Get Full Answer on WhatsApp