# Silenttiffy

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# 17 Questions

 59 Help me solve my father's riddle and get my book back 19 Infer number of terms in sum, given the value of the sum 18 I am searching for an unusual real-valued function. 16 Found an odd relationship! Could someone help me to prove or debunk it? 6 Can a convex polygon inside a square with edge length 1 have a perimeter > 4?

# 1,110 Reputation

 +5 Help me solve my father's riddle and get my book back +2 Find the greatest common divisor of $8^{10}+12$ and $8^5$ without a calculator. +2 Proving determinant equality $$\det{((A+B)^2)} = [\det(A+B)]^2$$ +5 Infer number of terms in sum, given the value of the sum

 5 What do you call geometric patterns like this? 3 What and how do derivate? 2 Examples of advancement in mathematics due to war 2 Commpossed percentage over same base 1 Minimize $\cos(t)\cos(t-\alpha)$

# 33 Tags

 6 calculus × 5 2 big-list 5 geometry × 5 2 soft-question 3 derivatives × 2 2 math-history 3 partial-derivative 2 percentages 2 trigonometry × 4 2 arithmetic

# 6 Accounts

 Mathematics 1,110 rep 324 Mathematica 295 rep 9 German Language 181 rep 3 Christianity 125 rep 3 MathOverflow 103 rep 5