Math & Science

financialwar · Post by **financialwar** » Mon Jan 14, 2013 10:02 am

I have the above formula, but the "r" on the bottom seem is normal size and compared to the rest of the formula it is too small.

\[
  PV=PMT\left[\dfrac{(1+r)\left[\dfrac{1-(1+r)^{-n}}{r}\right]-n(1+r)^{-n}}{r}\right]
\]

Is there a way to make it more proportional to the rest of the formula?

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Post by **Stefan Kottwitz** » Mon Jan 14, 2013 10:49 am

You can make it bigger using \mathlarger of the

relsize package. It can be nested for even larger sizes, such as

\[
  PV=PMT\left[\dfrac{(1+r)\left[\dfrac{1-(1+r)^{-n}}{r}\right]
    -n(1+r)^{-n}}{\mathlarger{\mathlarger{r}}}\right]
\]

However, perhaps you would like to change the vertical centering of the fraction within the brackets to get smaller brackets.

Stefan

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