a:1:{i:0;a:13:{s:2:"id";s:3:"611";s:7:"answer1";s:209:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=f'(x)%3D%5Cfrac%7B2%5Csqrt%5B3%5D%7Bx%5E5%7D%7D%7B3%7D" alt="f'(x)=\frac{2\sqrt[3]{x^5}}{3}" /></p>";s:7:"answer2";s:203:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=f'(x)%3D%5Cfrac%7B2%7D%7B3%5Csqrt%5B3%5D%7Bx%7D%7D" alt="f'(x)=\frac{2}{3\sqrt[3]{x}}" /></p>";s:7:"answer3";s:193:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=f'(x)%3D%5Cfrac%7B3%5Csqrt%7Bx%7D%7D%7B2%7D" alt="f'(x)=\frac{3\sqrt{x}}{2}" /></p>";s:7:"answer4";s:209:"<p><img class="latex" src="https://chart.googleapis.com/chart?cht=tx&amp;chf=a,s,000000|bg,s,FFFFFF00&amp;chl=f'(x)%3D%5Cfrac%7B1%7D%7B2%5Csqrt%5B3%5D%7Bx%5E2%7D%7D" alt="f'(x)=\frac{1}{2\sqrt[3]{x^2}}" /></p>";s:7:"answer5";s:0:"";s:7:"answer6";s:0:"";s:7:"answer7";s:0:"";s:7:"answer8";s:0:"";s:7:"answer9";s:0:"";s:8:"answer10";s:0:"";s:4:"good";s:10:"0100000000";s:8:"question";s:4:"1871";}}