How to Integrate sin(x)/x and cos(x)/x - HubPages
Two simple functions, sin(x)/x and cos(x)/x, can't be integrated the easy way. Here is how it's done. ... The Taylor series expansion of cos(x) is cos(x) = 1 - (x^2)/2! + (x^4)/4! - (x^6)/6! + ... Dividing this by x gives us an infinite series expansion f...