$ c_3 = P\left(\frac{2}{3}\right) = \frac{2}{3} - \frac{\left(\frac{2}{3}\right)^3}{3} = \frac{2}{3} - \frac{8}{81} = \frac{54 - 8}{81} = \frac{46}{81} $

Sun, 10 May 2026 14:47:47 +0000

Content under review