Financial Noob's Discoveries Part 2

Problem: Given a loan with an interest rate compounded daily, a target duration to completely repay the loan, and the fixed interval to make payments, how much should one pay per interval to completely repay the loan by the target duration?

Solution:

Financial Noob's Discoveries

Recently I have been thinking about the following problem: Given a loan with an annual interest rate that is compounded daily, and given a payment to be made at fixed intervals, how much money is actually paid to recover the loan and over how long? Hence I came up with the simple calculator below (thanks to jw for pointing out the function to use; this should run slightly faster if the log operation in javascript is implemented in less than O(n), otherwise no speed gain):

Now, the harder question is finding the converse: given a loan with an interest rate compounded daily, a target duration to completely repay the loan, and the fixed interval to make payments, how much should one pay per interval to completely repay the loan by the target duration?

New Version of Slide Show Widget

Finally completed a new version of the Slide Show widget here. As previously mentioned, this widget is fully cut and paste with minimal changes necessary. There are two control parameters at the near the end of the code:

picObject.slideit(); }) (1000, 1); /*]]>*/

The green parameter indicates the duration in milliseconds that each picture will display before the next. A value of zero means the picture will only swap when the mouse is moved over it, i.e. like the banner above. The red parameter indicates if clicking on the picture will open a link to the picture. A value of 1 means yes (i.e. the slide show on the right) and a value of zero means no (i.e. the banner).

Somehow I cannot get the blogger API to share the widget properly using a form, it keeps scrambling up the code and displaying it as a Text/HTML/JavaScript widget when it should be a TextList widget =(.