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| |} | | |} |
| | | |
− | {| align="center" cellpadding="10" width="90%" | + | {| align="center" cellpadding="10" |
− | | align="center" |
| + | | |
− | <pre> | + | <math>\begin{array}{rcccccc} |
− | o---------------------------------------o
| + | f |
− | | |
| + | & = & x & \cdot & y |
− | | f = x y |
| + | \\[4pt] |
− | | |
| + | \operatorname{E}f |
− | | Ef = x y · (dx)(dy) |
| + | & = & x & \cdot & y & \cdot & (\operatorname{d}x)(\operatorname{d}y) |
− | | |
| + | \\[4pt] |
− | | + x (y) · (dx) dy |
| + | & + & x & \cdot & (y) & \cdot & (\operatorname{d}x)~\operatorname{d}y~ |
− | | |
| + | \\[4pt] |
− | | + (x) y · dx (dy) |
| + | & + & (x) & \cdot & y & \cdot & ~\operatorname{d}x~(\operatorname{d}y) |
− | | |
| + | \\[4pt] |
− | | + (x)(y) · dx dy |
| + | & + & (x) & \cdot & (y) & \cdot & ~\operatorname{d}x~~\operatorname{d}y~\end{array}</math> |
− | | |
| |
− | o---------------------------------------o
| |
− | </pre> | |
| |} | | |} |
| | | |