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### Questions (11)

 11 General McNugget problem 6 Proving a function is constant when $f(x)f(y) + f(\frac{a}{x})f(\frac{a}{y}) = 2f(xy)$ 4 Finding all continuous functions such that $f^2(x + y) − f^2(x − y) = 4f(x)f(y)$ 3 How to find the limit of a markov chain 2 How to find the error term for multiple applications of a method

### Reputation (371)

 +20 General McNugget problem +5 Finding all continuous functions such that $f^2(x + y) − f^2(x − y) = 4f(x)f(y)$ +20 How many possible ways to pick 4 items from a collection of 20? +5 How to find the error term for multiple applications of a method

 4 Real numbers in math 2 How many possible ways to pick 4 items from a collection of 20? 2 Dihedral angles between tetrahedron faces from triangles' angles at the tip 1 angle between two intersected plane 0 Maximize $f(x) = x^3-3x$ subject to constraints

### Tags (23)

 4 algebra-precalculus × 2 0 numerical-methods × 3 3 geometry × 4 0 induction × 2 2 combinatorics × 3 0 functional-equations × 2 2 trigonometry 0 algorithms × 2 1 computer-science 0 analysis

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