m = log p − log ( p − d × r ) log ( 1 + r ) m = frac{log p - log(p-d times r)}{log(1+r)} m=log(1+r)logp−log(p−d×r)
m = log ( p p − d × r ) log ( 1 + r ) m = frac{logleft(frac{p}{p-d times r}right)}{log(1+r)} m=log(1+r)log(p−d×rp)
#include <stdio.h>
#include <stdlib.h>
#include <math.h>int main(){double d = 300000.0;double p = 6000.0;double r = 0.01;double x = p / (p - d * r);double y = 1 + r;double month = log10(x) / log10(y);printf("Month = %.2lfn", month);system("pause");return 0;
}
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