我正在尝试解决Udacity上的一个问题,描述如下:## represented as a list of tuples# you would follow on an Eulerian Tour# For example, if the input graph was# A possible Eulerian tour would be
我正在尝试用Mathematica解一个微分方程,我真的不是很理解它。我将在下面显示公式、我的尝试和错误消息:dp(t)/dt=rb(1-p(t))b = .02;r = .1;t = 0;DSolve[{p'[t] == r*b*(1 - p[t]), p[0] == .01}, p[t], t]DSolve::deqn: Equation or list of equations expected instead of True in the first argument {Tr
使用Python,我试图解决的问题。有人能告诉我我做错了什么吗?问题是要从两个3位数的乘积中找到最大的回文。这是我到目前为止所拥有的。 for z in range(100, 1000): for x in range(1, 1000000): if x == x[::-1] and x == z*y:
print x