QBasic - How to get the value of F

Question

I have the following formula:

F =  X / 1+4+9+16+....+n^2

How can I write a program in QBasic that find the result of F?

Thanks.

What gain do you get out of someone doing your homework for you? — a3f, Dec 06 '12 at 12:35
@a3f. It is not a homework. Tryinh to explain the question to a relative but got stuck on it. — Simplicity, Dec 06 '12 at 12:48

score 2 · Answer 1 · answered Dec 06 '12 at 12:35

2

From this useful page, the sum of the squares of the first n natural numbers is:

sum of the squares of the first n natural numbers

So you just need to calculate:

F = X * 6 / (n * (n + 1) * (2 * n + 1))

answered Dec 06 '12 at 12:35

Paul R

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score 2 · Answer 2 · edited Apr 05 '18 at 04:48

2

CLS
INPUT "Input the value of n: ", n%
INPUT "The value of X: ", X
denominator% = 0
FOR i% = 1 TO n%
    denominator% = denominator% + i% ^ 2
NEXT i%
F = X / denominator%
PRINT "F = "; F

edited Apr 05 '18 at 04:48

eoredson

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answered Jun 25 '13 at 20:29

DavidM

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score 1 · Answer 3 · answered Feb 12 '18 at 06:02

1

A power multiplier:

DEFDBL A-Z
INPUT "Input the value of n: ", n
INPUT "The value of X: ", X
INPUT "The power: ", p
denominator = 0
FOR i = 1 TO n
    denominator = denominator + i ^ p
NEXT
F = X / denominator
PRINT "F = "; F
END

answered Feb 12 '18 at 06:02

eoredson

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29

QBasic - How to get the value of F

3 Answers3