Question 序列 写出前六项 判断该数列是否为等差数列 判断该数列是否为等比数列 Load more 4,10,18,28,40,54 求值 an=n2+3nSolution 4,10,18,28,40,54 Show Solution
Algebra
Calculus
Trigonometry
Matrix Algebra Calculus Trigonometry Matrix