can anyone write a 3d code for this

[Walter Roberson]

Sorry, I cannot read the writing clearly enough.

It looks like w is defined

w = n*R*T*log(w/v1)

Is that the same w on the left side and in the numerator of the division in the log ?

Then it looks like you have Q*w and it looks like it is being defined as

Q*w -> Q * w = n*R_T*log(w/v1)

which looks like it changes from R*T to and also seems to be missing the w on the right hand side, unless T/R_T has the right ratio to eliminate the w multiplier ?

Then there seems to be a definition for T but I can't read it. And then there seems to be but maybe it is ... hard to say.

It is not obvious how any of this would connect together to create a 3D plot, especially since you show us a 2D plot instead...

[alice white]

well this function furmula is pv=nrt its for gases in chemistry

but in this case as u can see in the image the "T" is setted in here

for ever line there is a setted nub

the image shows that the more u increase the "V" the "P" gets lower

but the "T" is setted to a single nub for every line

i need a 3d shape of this

the math function needed is log

the actual fumula is in the next fallowing image

ty a lot btw

[Walter Roberson]

What are the independent variables, and their ranges? What is the dependent variable? What is the formula for the dependent variable in terms of the independent variables?

[alice white]

independent v

dependent p

formula : the last pic i sent u the logaritm function

f= -p1v1ln(v2/v1)

but this is the 2d form

i need a 3d which there is needed to be a 3rd partition which is the T

and this is setted to a nub for every line in the first pic like

T=200

T=300

.

.

.

there are 8 lines i need a 3d form of all of this

[alice white]

and i just visited ur page u r so cool

[Walter Roberson]

f=  -p1v1ln(v2/v1)

That appears to have three input variables, , , and one output variable, f .

You indicate that p is the output, so it sounds as if you have a given f value and you want

p_1 = f ./ (v_1 .* log(v_2 ./ v_1))

This appears to have three input variables, f, , and one output variable, . This would require a 4 dimensional plot.

You want to add T to the formula in some way that I already told you I cannot read from the image you posted in your Question.

Answer 1

[Image Analyst]

Did you try just plotting the formula? Something like this:

% independent v
% dependent  p
% formula : the last pic i sent u the logaritm function 
v1 = 2; % Whatever.....
p1 = 5; % Whatever.....
v2 = linspace(0, 5, 1000);
p = -p1 * v1 * log(v2 ./ v1);
plot(v2, p, 'b-');
grid on;
ylabel('P(pa)', 'FontSize', 20);
xlabel('v in m^3', 'FontSize', 20);

Adapt as needed for different T, v, v1, v2, p1, etc.