انا احب ال
├┬┴┼─╢╟╥╥┬┴┼─╢╟╥╥╢
╠╩╩╬╬╩╬╬╬╩╩╬╬╩╬╬╬╬
\delta d = \delta \left( {1 \over p} \right) =\left| {\partial \over \partial p} \left( {1 \over p} \right) \right| \delta p ={\delta p \over p^2}
انا احب ال
├┬┴┼─╢╟╥╥┬┴┼─╢╟╥╥╢
╠╩╩╬╬╩╬╬╬╩╩╬╬╩╬╬╬╬
\delta d = \delta \left( {1 \over p} \right) =\left| {\partial \over \partial p} \left( {1 \over p} \right) \right| \delta p ={\delta p \over p^2}
