how to get the value of two variables with respect to fixed value.

could anyone help me how to get the values of two variables A and B under the condition A<B,such that the sum of A and B should be (10,20,30,40,50).

Answer 1

[KSSV]

A = 0:50 ; 
B = 0:50 ; 
S = [10 20 30 40 50] ;

[A,B] = meshgrid(A,B) ; 
A(A>B) = NaN ; 
C = A+B ; 
% Get A<B but A+B = 10
idx = find(C==10) ; 
[A(idx) B(idx) A(idx)+B(idx)]

[jaah navi]

thanks.with respect to the code it gives all possibilities with respect to 10.

0 10 10

1 9 10

2 8 10

3 7 10

4 6 10

5 5 10

could you please help me how to find the display only one posibility for example 3 7 10.

[KSSV]

Pick any one out of it randomly.

[jaah navi]

i tried it and got the result

[jaah navi]

with respect to the code given:

C = [10 20 30 40 50] ;

A = 0:50 ;

B = 0:50 ;

[A,B] = meshgrid(A,B) ;

A(A>B) = NaN ;

C = A+B ;

% Get A<B but A+B = 10

idx = find(C==10) ;

[A(idx) B(idx) A(idx)+B(idx)]

it works fine.

But in my case the value of C is generated by the code itself and I doesnt know the values of C.In that case how to proceed with the remaining steps.

[KSSV]

It is generated by code......so you know it.

[jaah navi]

C=[ ] % value generated by the code

A = 0:50 ;

B = 0:50 ;

[A,B] = meshgrid(A,B) ;

A(A>B) = NaN ;

C = A+B ;

idx = find(C==10); so this command line needs to be replaced.

[A(idx) B(idx) A(idx)+B(idx)]

Could you please help me to replace it.

[jaah navi]

I also tried with the following code:

C=[ a] % a be the value generated by the code

A = 0:50 ;

B = 0:50 ;

[A,B] = meshgrid(A,B) ;

A(A>B) = NaN ;

C = A+B ;

idx = find(C==a);

[A(idx) B(idx) A(idx)+B(idx)]

When I run the code itdoesnt give the desired result.

[jaah navi]

I tried with the following code

C = value generated by the code and is found to be 9.4045

A = 1:C

B = 1:C

[A,B] = meshgrid(A,B)

A(A>B) = NaN

C = A+B

idx = find(C)

D=[A(idx) B(idx) A(idx)+B(idx)]

and the result appears to be D=1 1 2

1 2 3

1 3 4

1 4 5

1 5 6

1 6 7

1 7 8

1 8 9

1 9 10

NaN 1 NaN

2 2 4

2 3 5

2 4 6

2 5 7

2 6 8

2 7 9

2 8 10

2 9 11

NaN 1 NaN

NaN 2 NaN

3 3 6

3 4 7

3 5 8

3 6 9

3 7 10

3 8 11

3 9 12

NaN 1 NaN

NaN 2 NaN

NaN 3 NaN

4 4 8

4 5 9

4 6 10

4 7 11

4 8 12

4 9 13

NaN 1 NaN

NaN 2 NaN

NaN 3 NaN

NaN 4 NaN

5 5 10

5 6 11

5 7 12

5 8 13

5 9 14

NaN 1 NaN

NaN 2 NaN

NaN 3 NaN

NaN 4 NaN

NaN 5 NaN

6 6 12

6 7 13

6 8 14

6 9 15

NaN 1 NaN

NaN 2 NaN

NaN 3 NaN

NaN 4 NaN

NaN 5 NaN

NaN 6 NaN

7 7 14

7 8 15

7 9 16

NaN 1 NaN

NaN 2 NaN

NaN 3 NaN

NaN 4 NaN

NaN 5 NaN

NaN 6 NaN

NaN 7 NaN

8 8 16

8 9 17

NaN 1 NaN

NaN 2 NaN

NaN 3 NaN

NaN 4 NaN

NaN 5 NaN

NaN 6 NaN

NaN 7 NaN

NaN 8 NaN

9 9 18

but addition of A(idx) +B(idx) should be 9.4045.

Could you please help me on how to get it as I am struggling with it.

[jaah navi]

with respect to the code given by you

A = 0:50 ;

B = 0:50 ;

S = [10 20 30 40 50] ;

[A,B] = meshgrid(A,B) ;

A(A>B) = NaN ;

C = A+B ;

% Get A<B but A+B = 10

idx = find(C==10) ;

[A(idx) B(idx) A(idx)+B(idx)]

It works for round values.

But it doesnot work for decimal vaues

for example[10.5 20.6 30 .6 40.4 50.5]

could you help me how to do it for decimal values.

[KSSV]

It should be

A+B == C