File: /var/www/content-sp/wiris-cache/0b7b992f532cf9054173cf97c5631020.png
�PNG
IHDR � . ��� pHYs � ��+ baSE C�Y IDATx��=hQ�˒*D�J 6��D�AH�H�K!X��"B
�`a�"����N,�����^�.��������{߁a�l�{�˙7wƹ0pN�@����%�S�\�� ����U��El�*� w�W)!
+RY���=�C#ߍ^R:4���ׄ۔�|6�^d5�g(�f�n�f�u� ʆF!D�F��N
����Q}��)����h7M
#EL>�Y�'���済IT8�~^�/��߹��'�[nJ�)Կ��>tqST�ɴ��n�T��x�&A5������(ش�x6_�gSǮ�-OP+�+�������J��7��dt}t�EbU�Yt�'�>ׄ3�{�ev��+�f1Fs���Ũ�����H(�L&_�#��`_�F�ܰ�ě�,
�J3�^`F�ݐx8,�o�h�ޅ[���aC�����J��v2.��YFk
�)72�^� �s����~��0���oeW;���V�����1���0��;w�S3������x���F.��O ���fJ���.9^��V��yvD��
j�=����9u��ND����V�4�����]��?�r�I�Y���t�*��s�� F׆�]oc)vlc h�s�� u쭋;�Ώ`��˩<�M�0��^����[���7���H}v�۳]�c�{/����!��WY�1��Hgt����辡f�]{j�9�]� x�;��h+�r �Ԗ�x�l�2 �tEXtMathML <math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">E</mi><mi mathvariant="normal"> </mi><mo>=</mo><mi mathvariant="normal"> </mi><mfrac><mn>1</mn><mrow><mn>4</mn><msub><mi>πƸ</mi><mn>0</mn></msub></mrow></mfrac><mi mathvariant="normal"> </mi><mfrac><mi mathvariant="normal">P</mi><msup><mi mathvariant="normal">r</mi><mrow><mn>3</mn><mi mathvariant="normal"> </mi></mrow></msup></mfrac><mo>⇒</mo><mi mathvariant="normal">E</mi><mi mathvariant="normal"> </mi><mo>∝</mo><mfrac><mi mathvariant="normal">P</mi><msup><mi mathvariant="normal">r</mi><mn>3</mn></msup></mfrac></math>�� IEND�B`�