Help with a Scientific Calculator

techno_funky

techno_funky

Adept
Hi There,

People I am in a fix, 1st of all being from a commerce background I suck at math.

Well my Gal friend is stydying for an exam and it has some exponential sums to solve. She is allowed a scientific calculator in the exam, the calcy she has is a Casio FX-991ES which looks like this.

We are both wondering how to solve these exponential sums, for example

Code: 
Formula for calculating Compound Interest:
C = P (1+i)n

Where
C = amount
P = principal
i = Interest rate per conversion period
n = total number of conversion periods

Example:
Mr. X invested Rs. 10,000 for five years at an interest rate of 7.5%
compounded quarterly
P = Rs. 10,000
i = 0.075 / 4, or 0.01875
n = 4 * 5, or 20, conversion periods over the five years

Therefore, the amount, C, is:
C = Rs. 10,000(1 + 0.01875)^20
= Rs 10,000 x 1.449948
= Rs 14,499.48

So at the end of five years Mr. X would earn Rs. 4,499.48 (Rs.14,499.48 – Rs.10,000) as interest. This is also called as Compounding.

So how do we go about doing this on the calcy we have got. Halp!! :huh:
 
didn't you get a manual with the calc? imo, my old scientific calc which i bought came with a small 100 pgs or so manual detailing the functions.
 
img00062201010241344.jpg
 
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