You can type a formula into an input cell, and then, without evaluating, you convert the cell to TraditionalForm by using the menu

Cell > Convert To > TraditionalForm.

Then you copy and paste into "".

Have you tried typing your formula into an inline cell? First start a text cell with Format > Style > Text, then Insert > Typesetting > Start inline cell. The inline cells are signaled by a pink background color when the insertion point is inside them. When I type or paste into an inline cell, the parentheses preserve their size.

Hi Gianluca,

I did not understand your method. I tried using Traditional Form, but I lost the brackets for big formulas. And I could not Print the Traditional Form if the Mathematical expression is not consistent with mathematica Input format, for example I could not Print the formula

without using the "..." (TraditionalForm["...."]), and then I lose the mathematica Automatic Formatting.

here is the Equation in PlainText : 1/(R(r)) ([DifferentialD]/[DifferentialD]r)(r^2[DifferentialD]/[DifferentialD]r)R(r)-2(mr^2)V(r)-E]=[ScriptL

Hi David,

thank you for your help and time. Well I convert to Text by adding "...." at the begining and end of the Input. I have tried also Text [...] but the syntax has to be correct for Mathematica and therefore not flexible for what I need. I have to use the "...", in any case I get the small brackets and lose the original Mathematica Formatting. I am using Mathematica 10. To make it clearer, here is my Master Plan:

Step 1. Formating the Equation -> Font, Color, etc.... -----Here is where the problem is, since I can only format it with Style ["...", Arg1, Arg2, etc... ], but to use the Style function I have to put my equation in quoting marks "..." and there I lose the Automatic Formatting of Mathematica. Step 2. Export the Equation (no Copy paste)-> Good Resolution image PNG or EPS.

If I format the Input Cell Using the Format Tab/Ribbon I cannot export as EPS or PNG, and the Formatting looks different, I don´t like it.

One solution of my Question would be: 1. is there a Function option that defines the Fomatting of an Input Cell (conserve the Bracket Size) 2. What if the name of that Function 3. How can I use it to Format my Text with the Style[ ]. Obviously this is just one way of solving the problem, but I would gladly read a solution even with other route.