Question

Hi guys, What is "positive integral solutions" of a given equation?

Answer 1

what 's the given equation?

Answer 2

it the solution to the equation where all the variables are positive.

Answer 3

(1/x) + (1/y) = 1

This is the equation. I don't know what the positive integral solutions means.

Answer 4

it where x and y are >= 0

Answer 5

it means x>0 and y>0 and x y are integers

Answer 6

to solve that multiply xy to RHS and LHS,
x+y=xy --> xy-x-y=0 --> xy-x-y+1=1 --> (x-1)(y-1)=1 --> x-1=1 and y-1=1 --> x=2 and y=2

Answer 7

I need to find number of pos. in. solutions and the answer is 32327

Answer 8

Im so sorry, answer is 1

Answer 9

Thanks Yifan12879

Answer 10

you use a program to find?

Answer 11

int ans;
for (int x=1; x<... ;x++) {
y=1/(1-1/x);
if (y is integer) ans++
}

Answer 12

Yes,thanx