I found (nitpicking, I agree -- but that's what ##\TeX## does to you )$$(adsbygoogle = window.adsbygoogle || []).push({});

{dr\over dt} = {dr\over d\phi}{d\phi\over dt}$$ looking ugly and want to lift the two dr . However,

{dr\over dt} = {\vphantom {\phi} dr\over d\phi}{d\phi\over dt} didn't deliver as I expect:

$$

{\vphantom {\phi dr } dr\over dt} = {\vphantom {\phi} dr\over d\phi}{d\phi\over dt}$$ where omitting the \vphantom does take care of the lifting :

$$

{ dr\over dt} = {{\phi} \ dr\over d\phi}{d\phi\over dt}$$ (but I of course don't want the ##\phi##)

anyone have a tip how to get this done ?

PS the ordinary \phantom does work as I expect -- vertically as well as horizontally:

$$

{\phantom {\phi } dr\over dt} = {\phantom {\phi} dr\over d\phi}{d\phi\over dt}$$

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Getting \vphantom to work

Have something to add?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**