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# Differentiation help watch

1. Can anyone help with this maths Q?

Find dA/dP

K=[(A2)/(1-A2)](P/P*)

Cant write my working too messy when I can't use syntax. Im basically stuck on the last stage of simplifying .
2. (Original post by Nitrogen)
Can anyone help with this maths Q?

Find dA/dP

K=[(A2)/(1-A2)](P/P*)

Cant write my working too messy when I can't use syntax. Im basically stuck on the last stage of simplifying .
Look at using LaTex for formatting mathematics - there's a link in the resources on the forum page.

Or post a photo of your working.

What does the "*" represent?

Is K a constant?
3. (Original post by ghostwalker)
Look at using LaTex for formatting mathematics - there's a link in the resources on the forum page.

Or post a photo of your working.

What does the "*" represent?

Is K a constant?
K is a constant. You can treat P* as a constant too, but if you want to know P* stands for standard pressure in this case, A is degree of dissociation and P is total pressure.
4. (Original post by Nitrogen)
K is a constant. You can treat P* as a constant too, but if you want to know P* stands for standard pressure in this case, A is degree of dissociation and P is total pressure.
OK, but what about the first two points I raised.

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