# SICP Solutions

### Chapter 3, Modularity, Objects, and State

#### Exercise 3.62

To implement div-series we just need to multiply num by 1/den. We can use invert-unit-series to compute 1/den. There is only one caveat that invert-unit-series works when the constant term is 1. To work around this we can do the following:

$\, den = C \times \frac {den} C \,$, where C is the constant/first term in denominator. Now the series $\, \frac {den} C \,$ has 1 as a constant term and can be inverted.

Output:

I am also including the complete code - thus including all the code for series as well as stream operations that we have used till now.