Hello: I have been trying to solve the following equation on MathCad or Excel, however its been quite a struggle :( Can anyone please able to help me? As you can see in the equation below, I have to plot the value of hc but its located on both right and left side of the equation. All other variable (ao, f and v etc.) are constants. http://s9.postimage.org/cvr73gwel/help.png [Broken] Any help is REALLY appreciated. Thank you for your time and help.