# Some problems with formulas. • ### Question

• I would like to do the following formula in Small Basic

P = C (1 + r/n)<sup> nt</sup>
where
P = future value
C = initial deposit
r = interest rate (expressed as a fraction: eg. 0.06)
n = # of times per year interest in compounded
t = number of years invested

I wrote the followin but it does not seem to work.

• 'Compund Interest Calculator
TextWindow.Title = ("Compound Interest Calculator")
' initialize variables
c = 0
R = 0
N = 0
T = 0
' ask what the Initial Deposit is
TextWindow.Write("What is your interest rate? Expressed as a Fraction EG 0.06 for six percent.")
'Ask how many times a year interest is charged
TextWindow.Write("How many times a year is interest charged?")
'For how many years is the funds invested
TextWindow.Write("For how many years is the finds invested")
P = C*( 1 + )(r / n))Math.Power(n*t)

Any help would be appreciated.

Thursday, February 13, 2014 2:33 PM

• If you change the last line into:

```P = C*Math.Power(1 +(r / n),n*t)
TextWindow.WriteLine(P)```
it works. Furthermore it is better to insert a space after the ? in your textwindow.writes. It looks better.

Jan [ WhTurner ] The Netherlands

• Marked as answer by Thursday, February 13, 2014 3:24 PM
Thursday, February 13, 2014 2:56 PM