9 How do I apply something like the double slash notation but not at the end of line? 8 If and summation: why do I have the index of the summation in the final result? 7 How to use Intersection[] but keep the original list order 7 GeometricMean definition 7 Replacement Rule for Functions

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 +20 Why does Solve produce a result in terms of one variable, but not the other? +10 Mathematica ruins domain after explicit summation? +10 Show that all coefficients in a recursively defined function are integers +10 Finding all solutions to coupled algebraic equations without exhaustive enumeration

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### Tags (120)

 37 functions × 13 21 simplifying-expressions × 15 29 equation-solving × 13 21 calculus-and-analysis × 10 28 special-functions × 10 19 function-construction × 9 26 recursion × 13 18 summation × 12 22 series-expansion × 10 15 replacement × 7

### Bookmarks (3)

 2 Calculation of sum \begin{aligned}\sum_{k = 1}^{n - 1}\end{aligned}\left(1+\cos\left(\frac{k\,\pi}{n}\right)\right)^n 0 Create special matrix 0 Dot product returns symbolically when undesired [duplicate]