Notes on problem 4.8

- The
`inexact->exact`function can be used to convert from a floating point data type to an integer. This is really useful for the`sci-exponent`function in 4.8. - Write
`sci-exponent`first. Then write`sci-coefficient`. Then write`scientific`. `sci-exponent`involves something called change of base. If you have not done this using logarithms in a math class (or if you have forgotten how), please see the teacher for help. For those who just need a friendly reminder:- log
_{10}(n) = log_{b}(n)/log_{b}(10) - In Scheme, the natural log function, ln, not ln, but rather
`log`. In other words,`(log 29)`in Scheme is ln(29) in your math class. - So, if you want to compute log
_{10}(29), it is equal to log_{b}(29)/log_{b}(10)