{"status": "success", "data": {"description_md": "Let $f(x) = x^{2}(1-x)^{2}$. What is the value of the sum\n\n$$f \\left(\\frac{1}{2019} \\right)-f  \\left(\\frac{2}{2019} \\right)+f \\left(\\frac{3}{2019} \\right)-f \\left(\\frac{4}{2019} \\right)+\\cdots + f \\left(\\frac{2017}{2019} \\right) - f \\left(\\frac{2018}{2019} \\right)?$$\n\n$\\textbf{(A) }0\\qquad\\textbf{(B) }\\frac{1}{2019^{4}}\\qquad\\textbf{(C) }\\frac{2018^{2}}{2019^{4}}\\qquad\\textbf{(D) }\\frac{2020^{2}}{2019^{4}}\\qquad\\textbf{(E) }1$\n___\nFull credit goes to [MAA](https://maa.org/) for authoring these problems. These problems were taken on the [AOPS](https://artofproblemsolving.com/) website.", "description_html": "<p>Let  <span class=\"katex--inline\">f(x) = x^{2}(1-x)^{2}</span> . What is the value of the sum</p>&#10;<p> <span class=\"katex--display\">f \\left(\\frac{1}{2019} \\right)-f  \\left(\\frac{2}{2019} \\right)+f \\left(\\frac{3}{2019} \\right)-f \\left(\\frac{4}{2019} \\right)+\\cdots + f \\left(\\frac{2017}{2019} \\right) - f \\left(\\frac{2018}{2019} \\right)?</span> </p>&#10;<p> <span class=\"katex--inline\">\\textbf{(A) }0\\qquad\\textbf{(B) }\\frac{1}{2019^{4}}\\qquad\\textbf{(C) }\\frac{2018^{2}}{2019^{4}}\\qquad\\textbf{(D) }\\frac{2020^{2}}{2019^{4}}\\qquad\\textbf{(E) }1</span> </p>&#10;<hr><p>Full credit goes to <a href=\"https://maa.org/\">MAA</a> for authoring these problems. These problems were taken on the <a href=\"https://artofproblemsolving.com/\">AOPS</a> website.</p>", "hints_md": "", "hints_html": "", "editorial_md": "", "editorial_html": "", "flag_hint": "", "point_value": 2, "problem_name": "2019 AMC 12B Problem 8", "can_next": true, "can_prev": true, "nxt": "/problem/19_amc12B_p09", "prev": "/problem/19_amc12B_p07"}}