In fact, this year's Zhejiang college entrance examination mathematics is quite simple. The problem of final derivative can be solved directly by Lagrange mean value theorem and Taylor formula of Peano remainder! The problem of analytic geometry can be solved by solving the curve integral on the ellipse and then solving the double integral on the area contained in the ellipse! Solid geometry is simpler! Find the triple integral directly and solve it immediately! On the problem of sequence, it is proved by Dirichlet sufficient condition that the discontinuous point of the general formula converges to half of the sum of the left limit and the right limit, and then Fourier transform is carried out to find the n-order derivative by Laplace equation, and then the sum and limit are taken, and it is solved! In this way, all the big math problems have been solved! The previous questions are all sub-questions, and it is easy to get the score of 140.