Changes

<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref>.

<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref>.

<math>\bold{W} = \bold{F} · \bold{d}</math>

<math>\bold{W} = \bold{F} \cdot \bold{d}</math>

Or, its integral form:

Or, its integral form:

\int \bold{F} \cdot \mathrm{d}\bold{s}

<math>\int \bold{F} \cdot \mathrm{d}\bold{s}</math>

Or:

Or: