How can I calculate FVF ?

Hi

How can I calculate FVF ?

bf = 355.5+-7% * bf;

bm = 34.4+-20% * bm;

FVF = bf / (bf + bm);

I want to find the range variation of FVF when bf should be maximized and bm should be minimized.

Answer 1

[Star Strider]

I am not certain what you want.

Try this:

bf = 355.5+[-1 1]*355.5*0.07;
bm = 34.4+[-1 1]*34.4*0.2;
FVF = bf./(bf.*bm);

.

[Mallouli Marwa]

I want all the variation vector of FVF not only the max and min

[Star Strider]

Try this:

bf = 355.5+[-1 1]*355.5*0.07;
bm = 34.4+[-1 1]*34.4*0.2;
[BF,BM] = ndgrid(bf,bm);
FVF = BF./(BF.*BM)

producing:

FVF =
   0.036337209302326   0.024224806201550
   0.036337209302326   0.024224806201550

However if you want the range between those limits, this works:

bf = 355.5+[-1 1]*355.5*0.07;
bm = 34.4+[-1 1]*34.4*0.2;
[BF,BM] = ndgrid(min(bf):max(bf),min(bm):max(bm));
FVF = BF./(BF.*BM);

figure
surf(BF, BM, FVF)
grid on
xlabel('bf')
ylabel('bm')
zlabel('FVF')
view(-120,20)

.