Dealing with an exponentially debilitating problem

[redbaldyhead]

I can't resolve v(cubed)/exp(v)-1
which is the RHS of an equation that has been sorted out of the left!
I am rather hoping that this becomes v(cubed)/v which simplifies to v^2.

Thanks

 

[symbolipoint]

What are you trying to express, and what are you trying to find? Are you starting with this:

$$\[<br /> \frac{{v^3 }}{{e^v }} - 1<br /> \]$$

 

[redbaldyhead]

Sorry for the delay in responding!
No it is the RHS of Planck's equation for B(v)T
The LHS as I have reduced it to =Bc^2/2H

 

[redbaldyhead]

Actually =Bc^2 exp(h.kT)/2h

I think I correctly calculated the exp(h/kT) bit but I just can't figure out the rest of the equation on the RHS
Thanks for looking