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 CodingForums.com APR Calculator help ><

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 03-14-2009, 05:49 AM PM User | #1 Lanternkami New to the CF scene   Join Date: Mar 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts APR Calculator help >< I posted earlier today looking for some help making a calculator for the school project Im working on, the problem is that I need to use the Newton-Raphson method on the APR calculator Im trying to make. Below is a link to my site (the original is hosted on Blackboard) that has the formulas on it. Any help or pointers would be awesome, this thing is just being a huge pain, I got the first part of the equation down, heres the link: http://iddqd.net/help/calchelp.html and heres my code: Code: ```function stripComma(val) { return val.replace(/[,\s]/gi,''); } function apr() { var loan = stripComma(\$('loanamount').value); loan = Number(loan); var rate = stripComma(\$('intrestrate').value); rate = Number(rate); var months = stripComma(\$('monthnum').value); months = Number(months); var extra = stripComma(\$('extra').value); extra = Number(extra); if(loan == '' || extra == '' || rate == '' || months == '' ) alert ('Please be sure to fill in ALL of the required fields!'); //this does the first steps in calculating the APR by finding the monthly payments as per the directions rate = rate /1200; newrate = rate + 1; newrate = Math.pow(newrate, months); extra = extra + loan; extra = extra * rate; extra = extra * newrate; bottomnum = newrate - 1; payments = exta / bottomnum; alert(payments);``` Thx again all

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