My high school teacher always says that the (dy/dx) should not be interpreted as "dy" divided by "dx". (dy/dx) is a symbol meaning the derivative.(adsbygoogle = window.adsbygoogle || []).push({});

However i often observed that mathematicians and physicists wrote such things as:

dy=3dx

instead of dy/dx=3

and even----(dy=3dx), divided by dt ,means (dy/dt=3dx/dt)

???????

Do they break the convention or my teacher is wrong ?

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

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!

# Question about dy/dx

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