File: /var/www/content-sp/wiris-cache/054f6354eabd4d1acf9ea14d761090d1.png
�PNG
IHDR
^ 9A� pHYs � ��+ baSE /k��� IDATx��_�]G���֊V�Xˊ�"*TDT�%"��C�C�}���}(y�C JUDD���Py[�b����*UQ��T�D��k��|��p{r��ܙ9��~|��9��f����sf� ��Ⱥ��,� �m�0�|kd�ȼ��;Hw��4�F��@�m���ld�Ȧ�6Kd&��`�pϪIݱ� ��� l��=#o�]>2r,rҺ���F�7�O�\6�[EY��OZ�����Hg � #+Ff �(뎥����F6l�gF�i����k
�E��ϥI��PÞ���cqߣF^�Ħ0�ͧ[�ƍ<1�W?O�� ���ؠ�t ��W�� �t`5���,�P���KF�*�dMG֔}�H�l4�m�-l2�����l^Z�ﾑ�CB�_����>��
���䞾;�M#��\��;ˢ�'V��κ�#�s�@���'.����u��5l�㚲յU贩,�ii�u �B�'�u&[q�|��,�Ӓ�ז�m*�|�a���D���V��n �{9
��6��R;H�l��@ak�am1�s��l��i�uZ��>�k�N�V�t��ǏF>ֿ%�� Q�`��j���3�"'?�m�<�%��̛W��FE�i��d���8������k�1�Ff��a��.�߯����N�I♈�;���L�9�hH�E<es
�mTa�jG�e+_��[��A�����2a�OI���� 4�eͣcv��!^4�]dݷ��=m���Q:�� �
l�<��#'�(���X�'��|��X����3?58_���sR��ѿ���>�9�%����s,���#|�dI�=�@��Ņ�#x�ih1m3�������"��Q�-b۪L_���\[6Q{V��ے�ƛ(QdD�� 6� t���p5���m
m�J�fp $5rʣ `g: | ��F^��m�:��^ P����b��0�ۃnVS�E-E��[�M�4 ��k �g��j����i�m {M� �7� �g�Ѫ �ȎL &��g��&�� �==Y��.����hI�wu� *���\7Z���Ƨ��� ��p�e�U_���4 F0=��Q}�'�h ~�=j��jU�{-� ���W�z�r\7Z-�UזEV��
���f�U�kY�Yn};��h��[ �� ��3Q֍��� A0��۠ `$��Ș�y#�w��6�if�<߁�۠ �]#�9�:����<\��b2�:j�pϪIݱ���l䷂��T鶠�.xl�.�[��c#�������<J��0�KW�]���l h����J�٬u <ʺc�c�B�uGu�٣�P�k���a7,���oz�`�%[��uT�ﵚ�^��F�x��8��d���yB?�矮hCIt��լ� �t`5���,�P����7r|��1-W ۅ��~1��@Y�l� ݾ�-}G�k!��SGR��y�ʞ4�Ӂ�7�pBC-�#����wǑ��3��٭W"�β���t���[�tȎ~W�v��;�lִa(�kVז����o��#��y�:|���z��D =#_�3���u��2rME��9�s��u��4���v�弔q �C�p�g5�)�l [�aJ��e#7,���R�q�� ��i ���~l ̏F>ֿ%�� Q�`�j���H#��l:z(1��eړ-] �=� �rM��]#���c�E�x�
'{
t�S��$�����i�ms�9��9��o۹�շ
�" ��� іE��1�R�u�ET��s����Egܲ�ɱ;�4��F����V���O�!s5���<�t`۹�է
�X�~ӖE�ϥG2N�Qf��Ӓ��5�&�\ ���}ͽ��\kA�.#�� K�͟��,Y�g2 Y��5-!��ն��ȗ-��f6�zN1m9�N����I�6��س�dߖ���4��� dļ� 6� t��z�|�낢QG~I:D[Æۄ����>�uA l�}@�5 4 > `g!/��Y�zZ/ (��5yy J6P�]r��v�<�h��t[� ��_>7r-Ӊ��u�زMz�i� �#�b�N#��x]^�� oaxOO�4E�φ���#סj�X[�!�L��i �e� U�-�~J��u:���<��i � ���H����E(C��8
��'���j��aӓW4
�d'BS�ˆ��y��
T]��<��>&B"!?s^�t>�TΒ8W�9}�dUg�؛���+@ ����vU[\��� Qܮ���@�W}���È� T1����� itEXtMathML <math xmlns="http://www.w3.org/1998/Math/MathML"><mstyle mathsize="12px"><msub><mi mathvariant="normal">S</mi><mn>1</mn></msub><mo> </mo><mo> </mo><mo>≡</mo><mo> </mo><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><msup><mi mathvariant="normal">y</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><msup><mi mathvariant="normal">z</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><mn>6</mn><mi mathvariant="normal">x</mi><mo> </mo><mo>-</mo><mo> </mo><mn>8</mn><mi mathvariant="normal">y</mi><mo> </mo><mo>-</mo><mo> </mo><mn>2</mn><mi mathvariant="normal">z</mi><mo> </mo><mo>=</mo><mo> </mo><mn>13</mn><mo>,</mo><mo> </mo><msub><mi mathvariant="normal">C</mi><mn>1</mn></msub><mspace linebreak="newline"/><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo>≡</mo><mo> </mo><mo>(</mo><mo>-</mo><mn>3</mn><mo>,</mo><mo> </mo><mn>4</mn><mo>,</mo><mo> </mo><mn>1</mn><mo>)</mo><mspace linebreak="newline"/><mspace linebreak="newline"/><msub><mi mathvariant="normal">S</mi><mn>2</mn></msub><mo> </mo><mo> </mo><mo>≡</mo><mo> </mo><msup><mi mathvariant="normal">x</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><msup><mi mathvariant="normal">y</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><msup><mi mathvariant="normal">z</mi><mn>2</mn></msup><mo> </mo><mo>+</mo><mo> </mo><mn>10</mn><mi mathvariant="normal">x</mi><mo> </mo><mo>-</mo><mo> </mo><mn>4</mn><mi mathvariant="normal">y</mi><mo> </mo><mo>-</mo><mo> </mo><mn>2</mn><mi mathvariant="normal">z</mi><mo> </mo><mo>=</mo><mo> </mo><mn>8</mn><mo>,</mo><mo> </mo><msub><mi mathvariant="normal">C</mi><mn>2</mn></msub><mspace linebreak="newline"/><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo> </mo><mo>≡</mo><mo> </mo><mo>(</mo><mn>5</mn><mo>,</mo><mo> </mo><mo>-</mo><mn>2</mn><mo>,</mo><mo> </mo><mn>1</mn><mo>)</mo></mstyle></math>Z�� IEND�B`�