LaTeX LaTex question - keeping variables on the line

[Stephen Tashi]

Is there a way to keep variables in LaTex expressions from being displayed slightly raised above the line of text that surrounds them? Or am I doing something inadvertently that causes some of them to pop-up from the line? For example, the second "n", in the following:

a. Prove or disprove the following statement: For each integer n > 0 there exists a base B > 1 so that n is palandromic when written in base B..

 

[HallsofIvy]

Using [ itex ] and [ /itex ] (without the spaces) for shorter expressions will keep them in line- but can cause problems with "high" expressions.

For example, I am using "itex" for 3x^2- 2x, \frac{3}{4} and \sqrt{x^2+ y^2+ z^2}
but "tex" for 3x^2- 2x, \frac{3}{4} and \sqrt{x^2+ y^2+ z^2}

I prefer to put "tex" on separate lines:
3x^2- 2x
\frac{3}{4}
\sqrt{x^2+ y^2+ z^2}

 

[Stephen Tashi]

Thank you. I didn't know about the "itex" tag.